How much are ps2 network adapters so i can play online?

Answer 1

http://www.amazon.com/gp/product/B000051QDD/ref=olp_product_details/103-1159320-5209434?ie=UTF8&seller=

The above link is to amazon. It is listed at $45 but I think they are really like 40 if anyone still sells it. The new slim PS2 has built in adapter for internet.