Are F1 Zytel sheaths in stock ANYwhere?

[Macchina]

I have a couple of F1's (Micarta and standard) but they both have leather sheaths. I like the leather for hunting and belt carry, but they're not nearly as nice in the pack as a zytel sheath. I find I only bring my S1 hiking because it has a Zytel sheath.

Does anybody know where I can get one in the USA? They seem to be out of stock at every place on Google Shopping. I'd like to pay under $20 shipped (as most of them are priced at that, but out of stock).