Bitcoin is accepted throughout their website right now. When you make a purchase, it shows up right next to credit card, paypal, and others.
Even better, Playerauctions list the total cost of your order as a base cost + fees. Bitcoin is noticeably cheaper to use to make your purchase than any other of the payment methods.
On top of that, the bitcoin exchange is running with a few sellers, which you can find here:
http://www.playerauctions.com/bitcoin-bitcoin/This allows you to buy bitcoins with a credit card.
Of course the prices are higher than other places, due to the lack of sellers, but it has been growing. There is also about a 5% fee for selling, so your price must be adjusted accordingly.