[totaltec]

Vasilis,
IMO, you need to make it, or have it made by someone. You could probably start with a product like Clever Filters, but in the end it may frustrate you if you can't change the code yourself (or have it changed by someone else).

X-cart is a platform to be built upon, that is what makes it great. Don't lock yourself into a 3rd party mod, unless you can do the same with it. I have never been able to build exactly what the client wants with an off the shelf product.

On the other hand, if you are willing to live with the functionality that the mod offers, and accept all of its shortcomings, then it can save you a lot of money. There is no right or wrong way here. It is up to which better suits your budget, and how much control you want over the final product.

-Mike