I was searching in the Abbey Bominable tag for a white-haired Abbey, and halfway down was a post like “Hey- We have a Heath in stock!” and link to their page, they tagged Monster High, too, but I didn’t see it while searching MH either.
Edit: They mostly have comic book stuff and action figures- the only MH item is the Heath/Abbey. Granted, most of their prices are fairly reasonable, but the MH one was marked up by $13.