Hmm, Well, I’ve been really happy, with the EnjoyPBT ABS BoW keycpas, that I’ve been using. they were about $80 USD a set shipped. I believe they can be had in a WoB option.
If you look at the List of Keyboard Retailers / Shops / Stores / Vendors? - #98 by ajoflo post, @ajoflo has set it up, so that their are keywords under the merch column. There are quite a few retailers that sell keycaps. You’ll have to check to see what’s available. 