Just about a month ago the Xbox 360 802.11n adapter started showing up on various retailers’ websites. It originally listed at $99 with an expected launch date of November 3rd. Well, Tuesday came and went with nary a word about the new peripheral, and the product listings had pretty much disappeared.

The overpriced periph returned today, though, popping up on Costco’s website with an $88 price tag and free shipping. The site lists a November 10th ship date. Obviously things are subject to change, as we found out the last time. I have to say, though, if waiting another month would drop the price to $77, it just might be worth it. I’d almost sort of consider maybe calling that nearly reasonable. But not quite.

Looks like Microsoft is ready to win back some of the profit it lost when it cut the price of the 360 this year. Gamestop has just added the new 802.11n wireless adapter to its online store for a whopping $99.99. That’s an insane price for a wireless USB adapter, made worse because it’s such a big performance leap for gamers looking to go wireless.

Here’s the copy from Gamestop:

Designed for versatility and ease, the Xbox 360 Wireless Networking Adapter ‘N’ enhances your Xbox 360 experience in the digital home, seamlessly synchronizing with the Xbox 360 system with the newest Wireless N standard. Wireless N offers increased speed, coverage and reliability and can easily stream media-intensive applications such as ‘Games on Demand’, HD movies, videos and music to your Xbox 360 system from Xbox LIVE® or your Media Center PC.

Oh how I long for the day wireless gaming will be reasonable. The adapter will be available November 3rd.