Caspervend wiki has a big red banner at the top:

"As of September 1st, 2021; Linden Lab has prohibited all sales using the chance based "Gacha" Style System. Gacha Machines from CasperTech will no longer work. "

It may be the case that Caspervend no longer wishes to sell the gacha expansion, but the info there is no longer accurate (and iirc, LL owns CasperTech now).

Anecdotally, people recently purchasing the Caspervend2 Fatpack did not receive a gacha vendor in their order, too. This is fair enough, since the gacha expansion isn't mentioned on the fatpack MP page anymore, but it brought the issue to everyone's attention in the User Support Group.

Please fix either the wiki information, or the fatpack!