eyeglasses.com
 

Do you think it would be possible to use x-cart to clone a site like http://www.eyeglasses.com/ ?

Yup but that's a serious level of customisation you have to do. For example check the "let me select a lense" option which brings up the multistage lens wizard.

There's load of custom searches on that site and then futher options of sorting via other criteria.

Depends how much of a clone you are looking for :wink:

You wouldn't want to upgrade a site that had that level of customisation done to it though :D

Do you think they wrote the code from scratch for that site ?

It's certainly been done to their specification so I'd say it looks very bespoke, if it's not been written from scratch it's a pretty modified cart of some some then.

Updating
 

Other than I found it slightly slow, why do you want to change it. Looks good now.