I remember from my early days as an affiliate that waiting for the commission check to arrive, then cash it in were amongst the most annoying things of the affiliate marketing business.

It was annoying because you had to wait for the money to re-invest instead on focusing on growing the business. Wire transfers sometimes are subject to high banking fees.

Even with PayPal (PayPal made things slightly better for the affiliates), you still had to withdraw the money to a card (and that added some more fees) or to a bank account. My time working for software vendors showed it was quite the same for software vendors – waiting for the check to arrive or paying wire transfer fees.