Is there any way to create a buy X, get 1 free or Buy X, get 1 at a discount that plays well with inventory management apps? So far, the few that I contacted say that you have to create duplicate and hidden SKUs for them to work, and that messes up inventory.
I hate having to send customers to my eBay store just so they take advantage of buy X, get 1 over there. Setting it up on eBay does not mess up my inventory management across Shopify, eBay, and Amazon. I'd love to be able to offer the same deals on my Shopify site.