Don't even need that. BTC has been growing in "value" significantly over the past month or so. If they just wait a month between receiving bitcoins for payment

Don't even need that. BTC has been growing in "value" significantly over the past month or so. If they just wait a month between receiving bitcoins for payment and redeeming them for cash or whatever, that'll likely be a reasonable return on investment. Assuming, of course, that trends continue.