Hello
I'm an experienced products extractor, exporter and importer with a lot of shopping carts experience like osCommerce, wordpress+woocommerce, prestashop, magento, zencart, amazon and many more
I read your project requirements (price multiplier, image cutting/resizing, height/length/width inch conversion from cm)
If you look for an experienced freelancer, I'm ready to start right now
Regards
George