>>75045778merch sales + gift memberships (sisters tend to gift bomb them a lot) and just the average paycheck from working in a corpo. Also they do have whales, at least from what i remember seeing some girl give Vesper $400 for a plane ticket and Bettel has his own whales constantly dumping money on him all the time.
Dont think theyre making nearly as much as the girls but NotMagni has talked about having more than enough money so I assume they get a nice cut.
