Thank you for your interest in Sitefinity eCommerce module. We have Product Variations planned for Sitefinity 4.3 which will be released around mid-october.
the Telerik team
Do you want to have your say in the Sitefinity development roadmap? Do you want to know when a feature you requested is added or when a bug fixed? Explore the Telerik Public Issue Tracking
system and vote to affect the priority of the items