Problem with calculation of product price by "decimal" length

Hi,

I suppose you're using the plugin www.hikashop.com/marketplace/product/221...quantity-plugin.html
So, the probably is probably with your custom item field. The column name of the custom field must be exactly "ordered_length". Otherwise, it will be ignored by the plugin.
Alternatively, you can use the price calculations plugin:
www.hikashop.com/marketplace/product/148...ce-calculations.html
It has many advantages over the plugin you're using:
- you can have different fields for different products
- you can enter complex calculation formulas, not just price * value, and you can combine the value from different fields if necessary
- the plugin directly displays a "calculated price" on the product page when a field value is changed.