Sell ​​the product by weight. Is it possible ?

-- HikaShop version -- : 2.3.4
-- Joomla version -- : 3.3.6
-- PHP version -- : 5.5.12
-- Browser(s) name and version -- : Google Chrome

Dear , good night . Is there a way to allow the sale of products in quantities fraguementadas ? Example : I'm selling oranges, and price of oranges is $ 0.99 cents , but the customer want to buy just 1,450kg .

As if the product were heavy to be sold.

I hope I was clear in my doubt , now thank the minutes provided to try to help me .