First off, in terms of the why, I’m mostly looking for something disposable for practice. Mostly spooling onto the reels, but also developing, and if I don’t use them all up, to test cameras (I’m new to 120, and mostly new to developing myself.). 10 rolls where I don’t have enough invested to care about the outcome is just the ticket.
For the outcome—the first pack I bought the next day ebay cancelled the sale, and refunded me the money, but not before the seller gave me a tracking number. That tracking number was delivered to Florida (not NM where I live) so that one was clearly a scam. There was another seller that had three listings, two for about $10 and one for $80 or $90. So, what the heck, I ordered one of the $10 packs. Interestingly, if I tried to put two packs in my eBay cart, it complained that the seller only allowed someone to buy the item once every 10 days. That’s kind of weird. But whatever, I ordered one pack. It says shipped, but doesn’t give a tracking number.
I’m sure it will be a month or so before I see it (or don’t) but I will report back. If it’s a scam, I'll file a claim with eBay and get my money back. It just means my $10 will be in limbo for a while.