Quote from furball404 »What is the relation between the second hand economy and the primary economy on MTGO?
It's the same as in paper, except with much, much lower transaction costs. Cards enter the economy largely through Limited players dumping their cards to recoup value after events, so much like paper, there are very few non-promo cards that enter the market without Wizards taking a cut somewhere along the line. If you spend $100 on 100 tickets' worth of cards (I know the exact exchange rate isn't 1:1 but we'll pretend it is for this example), then those are cards that Wizards has already taken their cut for. Inflation is kept under control because tickets are taxed out of the economy for their secondary purpose: entry into events. Cards only really leave the economy through redemption or from players quitting.
Also, tickets in the economy were similarly paid for at one point. If you order from a major bot chain with Paypal or another external means of payment, then sure, Wizards doesn't really get any new cut compared to buying tickets from the store (instead of from secondhand sellers undercutting Wizards) and trading them to the bots. But the key thing to remember here is that everything that exists in MTGO represents something Wizards has already taken its cut for.