[TYPO3] ecom sites in tt_products

[Surajit]

hi!

Could anyone please lead me to some Ecommerce sites build in Typo3 using 
tt_products.
and
please tell how-to display/optimise a product image:
 >> image size (in bytes) reduced in single display with width=100
 >> original image size in pop-up display width actual image width


Thanks
Surajit