The hard part is not scraping, it's returns. For many kinds of online products, the return rate is over 40%. The shopper must be completely aware of how to contact the merchant of record and how to return the product.
Also, if you are scraping a large retailer you are effectively required to be PCI DSS level 1 compliant, which takes a bit of extra effort.
Also, if you are scraping a large retailer you are effectively required to be PCI DSS level 1 compliant, which takes a bit of extra effort.