Quoted from Fezmid:If you had nothing to gain by keeping his money... why did you keep his money? Based on this account, I agree he seems flaky, but if you didn't ship him the product, I don't think you had a right to keep the money until you sold the product. My 2 cents, only because you asked.
Because it was a special custom order for him that cost above and beyond a normal game. He's lucky they didn't charge a restocking fee because of the custom order. Hell, most companies don't allow returns of custom orders.