Answer: At least one!
Let me quote iam8bit:
iam8bit, Limited Run Games and Double Fine Productions have joined forces to bring you this exclusive variant to one of our favorite games – the seminal, superb and scrumptious Psychonauts! Originally intended to be sold in person at the 2020 Game Developers Conference in San Francisco, the event’s postponement inspired our collective teams to make this an online exclusive release event instead, with only 500 copies of this highly collectible version available on each of Limited Run Games’ and iam8bit’s webstores.
Get ready to pick it up tomorrow at 9 AM PST. I mean, just look at the Scott C. cover. Available for PS4 for a mere $29.99.