[Skip to main content](#vessel-content) # USPS plugin decreases shipping price by 50% ## - **[Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile")** - [![Tatiana1311's Avatar](https://www.hikashop.com/media/kunena/core/svg/person.svg)](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile") Topic Author - [ Offline](/forum/user/37036-tatiana1311) Less More - Posts: 7 - Thank you received: 0 - - 11 years 5 months ago - 11 years 5 months ago [\#200232](#200232) by [Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile") *[USPS plugin decreases shipping price by 50%](/forum/28-shipping-methods/876671-usps-plugin-decreases-shipping-price-by-50#200232 "-- url of the page with the problem -- : flordelicious.com -- HikaShop version -- : latest -- Joomla version -- : latest -- PHP version -- : latest -- Browser(s) name and version -- : Google Chrome When I use a 10% coupon at the checkout (THANKYOU10) - it cuts the shipping rate in half. What can be the problem? Also - the USPS plugin calculates the shipping rates a bit higher than normal (but I manage it by putting a negative value in the Price field inside the USPS shipping plugin). I am attaching screenshots - 1 is before the coupon applied and the second one is after the coupon applied, so you can see the difference in shipping price.")* was created by *[Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile")* -- url of the page with the problem -- : flordelicious.com -- HikaShop version -- : latest -- Joomla version -- : latest -- PHP version -- : latest -- Browser(s) name and version -- : Google Chrome When I use a 10% coupon at the checkout (THANKYOU10) - it cuts the shipping rate in half. What can be the problem? Also - the USPS plugin calculates the shipping rates a bit higher than normal (but I manage it by putting a negative value in the Price field inside the USPS shipping plugin). I am attaching screenshots - 1 is before the coupon applied and the second one is after the coupon applied, so you can see the difference in shipping price. - [ ![Screen_Shot_2015-04-29_at_12_01_18_AM.png](/forum/attachment/24144) ](/forum/attachment/24144 "...2_01_18_AM.png") [ ](/forum/attachment/24144?download=1 "...2_01_18_AM.png") - [ ![Screen_Shot_2015-04-29_at_12_02_05_AM.png](/forum/attachment/24145) ](/forum/attachment/24145 "...2_02_05_AM.png") [ ](/forum/attachment/24145?download=1 "...2_02_05_AM.png") Last edit: 11 years 5 months ago by [Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile"). Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzI4LXNoaXBwaW5nLW1ldGhvZHMvODc2NjcxLXVzcHMtcGx1Z2luLWRlY3JlYXNlcy1zaGlwcGluZy1wcmljZS1ieS01MD90bXBsPW1hcmtkb3du) or [Create an account](/component/users/registration?Itemid=101) to join the conversation. - **[Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile")** - [![Tatiana1311's Avatar](https://www.hikashop.com/media/kunena/core/svg/person.svg)](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile") Topic Author - [ Offline](/forum/user/37036-tatiana1311) Less More - Posts: 7 - Thank you received: 0 - - 11 years 5 months ago - 11 years 5 months ago [\#200235](#200235) by [Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile") Replied by *[Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile")* on topic *[USPS plugin decreases shipping price by 50%](/forum/28-shipping-methods/876671-usps-plugin-decreases-shipping-price-by-50#200235 "-- url of the page with the problem -- : flordelicious.com -- HikaShop version -- : latest -- Joomla version -- : latest -- PHP version -- : latest -- Browser(s) name and version -- : Google Chrome When I use a 10% coupon at the checkout (THANKYOU10) - it cuts the shipping rate in half. What can be the problem? Also - the USPS plugin calculates the shipping rates a bit higher than normal (but I manage it by putting a negative value in the Price field inside the USPS shipping plugin). I am attaching screenshots - 1 is before the coupon applied and the second one is after the coupon applied, so you can see the difference in shipping price.")* Also - here's my USPS plugin settings. By the way - do you guys happen to have a tutorial for the USPS plugin? I still cannot figure out how it calculates the price and I just have to randomly set the fields to adjust the final number close to the truth.. I am actually trying to set up the shipping price about 25% of the price of the item and increment for each additional item by 50% of the shipping for that item - [ ![Screen_Shot_2015-04-29_at_1_22_23_AM.png](/forum/attachment/24147) ](/forum/attachment/24147 "...1_22_23_AM.png") [ ](/forum/attachment/24147?download=1 "...1_22_23_AM.png") Last edit: 11 years 5 months ago by [Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile"). Reason: Wrong screenshot Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzI4LXNoaXBwaW5nLW1ldGhvZHMvODc2NjcxLXVzcHMtcGx1Z2luLWRlY3JlYXNlcy1zaGlwcGluZy1wcmljZS1ieS01MD90bXBsPW1hcmtkb3du) or [Create an account](/component/users/registration?Itemid=101) to join the conversation. - **[Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile")** - [![Tatiana1311's Avatar](https://www.hikashop.com/media/kunena/core/svg/person.svg)](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile") Topic Author - [ Offline](/forum/user/37036-tatiana1311) Less More - Posts: 7 - Thank you received: 0 - - 11 years 5 months ago [\#200319](#200319) by [Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile") Replied by *[Tatiana1311](/forum/user/37036-tatiana1311 "View Tatiana1311's Profile")* on topic *[USPS plugin decreases shipping price by 50%](/forum/28-shipping-methods/876671-usps-plugin-decreases-shipping-price-by-50#200319 "-- url of the page with the problem -- : flordelicious.com -- HikaShop version -- : latest -- Joomla version -- : latest -- PHP version -- : latest -- Browser(s) name and version -- : Google Chrome When I use a 10% coupon at the checkout (THANKYOU10) - it cuts the shipping rate in half. What can be the problem? Also - the USPS plugin calculates the shipping rates a bit higher than normal (but I manage it by putting a negative value in the Price field inside the USPS shipping plugin). I am attaching screenshots - 1 is before the coupon applied and the second one is after the coupon applied, so you can see the difference in shipping price.")* Never mind, I changed the shipping settings and now it works, though I still don't understand why coupon was cutting the shipping rates... Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzI4LXNoaXBwaW5nLW1ldGhvZHMvODc2NjcxLXVzcHMtcGx1Z2luLWRlY3JlYXNlcy1zaGlwcGluZy1wcmljZS1ieS01MD90bXBsPW1hcmtkb3du) or [Create an account](/component/users/registration?Itemid=101) to join the conversation. - **[nicolas](/forum/user/63-nicolas "View nicolas's Profile")** - [![nicolas's Avatar](https://www.hikashop.com/media/kunena/avatars/resized/size144/users/avatar63.png)](/forum/user/63-nicolas "View nicolas's Profile") - [ Offline](/forum/user/63-nicolas) Less More - Posts: 86290 - Thank you received: 14268 - - 11 years 5 months ago [\#200340](#200340) by [nicolas](/forum/user/63-nicolas "View nicolas's Profile") Replied by *[nicolas](/forum/user/63-nicolas "View nicolas's Profile")* on topic *[USPS plugin decreases shipping price by 50%](/forum/28-shipping-methods/876671-usps-plugin-decreases-shipping-price-by-50#200340 "-- url of the page with the problem -- : flordelicious.com -- HikaShop version -- : latest -- Joomla version -- : latest -- PHP version -- : latest -- Browser(s) name and version -- : Google Chrome When I use a 10% coupon at the checkout (THANKYOU10) - it cuts the shipping rate in half. What can be the problem? Also - the USPS plugin calculates the shipping rates a bit higher than normal (but I manage it by putting a negative value in the Price field inside the USPS shipping plugin). I am attaching screenshots - 1 is before the coupon applied and the second one is after the coupon applied, so you can see the difference in shipping price.")* Hello, Regarding your USPS settings, you should not set a negative price option like -1. > do you guys happen to have a tutorial for the USPS plugin You can check the USPS shipping documentation page to know what the USPS options exactly are. > I still cannot figure out how it calculates the price and I just have to randomly set the fields to adjust the final number close to the truth.. The USPS shipping plugin will send details of your order like : - The shipping address - Your order weight and dimensions - Some of your USPS settings And then it will display the shipping rates that are returned from the USPS platform. > I am actually trying to set up the shipping price about 25% of the price of the item and increment for each additional item by 50% of the shipping for that item In that case the best solution will be to use a manual shipping method Please [Log in](/login?return=aHR0cHM6Ly93d3cuaGlrYXNob3AuY29tL2ZvcnVtLzI4LXNoaXBwaW5nLW1ldGhvZHMvODc2NjcxLXVzcHMtcGx1Z2luLWRlY3JlYXNlcy1zaGlwcGluZy1wcmljZS1ieS01MD90bXBsPW1hcmtkb3du) or [Create an account](/component/users/registration?Itemid=101) to join the conversation. 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