I had an issue on Steam during their Lunar New Year sale, where I accidentally purchased the wrong "bundle" (there were two, one was missing one or two items).

I had an issue on Steam during their Lunar New Year sale, where I accidentally purchased the wrong "bundle" (there were two, one was missing one or two items). Unfortunately, I couldn't refund the bundle; I had to go through the process of submitting for a refund of every item in the bundle (I think eight or ten items), with an explanation of "oops, wrong bundle"). Unfortunately, while both bundles were on sale, the items missing from the bundle I'd purchased were more expensive to buy individually than the entire bundle cost, and there was no 'upgrade" from one bundle to the next with discount for already purchased items. I get that this is all a complicated dance between Steam, users, and publishers, but it seems as though this kind of situation is worse for everyone involved, and discourages spending more on that $30 DLC, when the bundle that it comes in is $5 more than the bundle you purchased.