Add more prices to item

Hello
in my work i have 2prices to each item ( sale price - wholesale price ) and some customers buy by the sale price and the others by whole sale price.

can i add many prices to item (wholesale price) and make categories for customers each category has price level to organize my customers

Regards

Same question.. and this hasn't been answered in 4 years!
So this means basically no way for me to use this accounting software.
I installed it to test it and found the same limitation which is a no go for me.
Good bye.