Ecommerce Stores and Such

I run a small metal roofing and siding company and have been considering expanding to online sales, just because it is pretty much untapped market.

I started out trying ecwid, which would work decently. My only issue with it is that I can’t hide the % of increase on the drop down menu’s, which are how users input the size. Not a big deal really, but I imagine those extra numbers would confuse some customers.

My other issue with ecwid, is that you have to use a new product for a different base price. For my example I sell my standard metal at $2 a foot, and to add a 40 year warranty would be a 20% increase per foot….. But, when you do that with ecwid, it just adds 20% to the base price not the modified footage. So in reality 40 year= $2.40 per foot. But ecwid would be $2 base + 20% warranty + footage %

Just looking for some thoughts, ideas, or other options, thanks

my current test page
http://www.polebarnmetals.com/test/