These pair were intended for the Mexican market however were never released here in the US. In brand new condition, never used or worn, in perfect shape

Other stuff:
Prototype or not?, but the seller is very legit
Dig Dug & Pac-Man Atari 5200 lab loaners

From the auction:

This is a huge advertising display that really wasn’t intended for stores but was intended to be displayed in Nintendo corporate offices. Not sure what it is made of - hard plastic, fiberglass, resin? It is rigid and hollow inside. I believe it was produced in 2000 and has no labels or any identifying information on it. I bought it about 9 years ago from someone who used to work at Nintendo. I was told that only 10-20 of these were produced. It is 46” tall, 27” wide elbow to elbow, and 21” deep from tip of his nose to tip of his tail. It weighs approximately 21 lbs. and is attached to a heavy metal base. This will be pricy to mail. Professional packaging will be $80 and postage by UPS ground could be around $150 or more (estimate give by UPS store). It has been stored for 9 years in the garage and has some very minor scratches. I took a couple of pics of what I think are the bigger scratches - white dots on his nose and a scratch on one of his sleeves. Winning bidder will pay bid plus $80 packaging and all postal/mailing costs and insurance. If you live locally (Seattle/Tacoma area) we can arrange pickup to save on packaging/mailing costs. This would make an excellent gift or a great addition to your Nintendo Advertising Memorabilia collection. Return only if item has been grossly misrepresented. Ask questions and best of luck bidding.

Link

There were a total of 96 of these given out to the participants that made the Top 32 in their respective age group in the 2009 Pokemon Word Championships.

Oddly, both sold for $599.00.

Completed auctions here and here.

EDIT: On second glace, both auctions contain the same photos. Odd and possibly sketchy.

This console was given away as part of the marketing effort for South Park: Let's Go Tower Defense Play!, an XBOX Live Arcade game that launched on the 7th of October, 2009. You can view the original contest entry page here. So far, I can not find the number of consoles that were given away.

It also included a kit with a Goth Kids Coffee Mug, Terrance and Phillip Movie poster, WANTED: ManBearPig Poster, Vote Douche and Vote Turd Campaign pins, South Park word magnet game, Towelie Microfiber computer cloth and a South Park Fan trivia quiz book. There was also a Large poster of the South Park gang and "Lets go tower of defense Play".

Sold for $1,100.00.

These were given away by Best Buy in their "30 DAYS OF HALO SWEEPSTAKES". You also needed to be a Best Buy Reward Zone program member to win. Thirty of these were available.

Sold for $660.00.