The three new busks I just received from King andCompany on Etsy. I'd heard about the shop while reading through the CorsetMakers group on LiveJournal. I'm quite happy with them. They're exactly what I expected them to be-- sturdier than the standard busks sold at places like Vogue Fabrics and Corsetmaking.com, the shape of the opening on the loop side is also altered slightly, which is supposed to help make it less likely to accidentally come unhooked, and the bottom two loops are spaced closer together than the others, which is apparently more historically accurate. And they're cheaper, too, by a couple dollars apiece, plus cheaper shipping!
I'd actually been putting off making an Etsy account for quite awhile, because the name Maggiedoll was already taken (as it is quite a few places) and I'm really bad at coming up with new names! But after finishing my last corset, I needed busks, and there was nowhere else nearly as good to get them from, so I bit the bullet and made a non-Maggiedoll account.