[Plugin: WordPress Simple Paypal Shopping Cart] dynamic price with simple paypal plugin

By dynamic price do you mean variation? If you do then read the Usage documentation that has a section on variation price usage.

I still didnt find what I need…
what I mean by dynamic price is, for example: product x price is 20$, and for 2 items from same product x I want to set different price, like 35$ instead 40$..

I have woo commerce and this is sorted out in the variable products option.

so we not talking about the same plugin…

Thanks anyway! ??