Quoted from Toasterdog:When the buyer has less than (x) amount of transactions through Paypal they will hold the funds for so many days.
Since this is through ebay / paypal I would feel comfortable you will get paid. I do think you made the right move though. Always wait until funds are fully cleared and in your Paypal account, your account will say "okay to ship."
Sorry, this is VERY bad advice. Google it, search Pinside or RGP. Ebay and PP have tilted the playing field 100% in favor of buyers. When the buyer gets the game and says it is broken, not as described, or isn't even the same game he bought, you are done for. A well know guy sent a NIB BK to a buyer and the buyer put a beat up BK in the box, took pics and the seller lost the whole deal.
I had 1000+ feedbacks, 100% on ebay, over a 12 year period. I sold an item to a 5 feedback guy, he paid with pp and i shipped it. I got the tracking back, he signed for it. Then he disputes with ebay and pp, said he got an empty box. My tracking showed it weighed 6.5 pounds when it left here. They sided with him, refunded his money. He has the goods, he has the money, and I'm not on ebay anymore.