I paid £275 for it back in May, which according to my PayPal history was $456.96 (exchange rates are a little cheaper at present). My most expensive Pokemon event purchase to date, but given the rarity of the system, I didn't want to let it slip to someone else. I don't remember what the auction's original Buy It Now price was, but the seller was also taking offers, and after a little haggling I didn't need to go too much above my initial offer for him to accept it.
The seller also had a EUR berry glitch system up. It was an original style GBA with a cart that had tape all over it in what was apparently an attempt to "secure" it in the system. Since I already have a GC demo disc with the berry fix / shiny Zigzagoon distribution, I wasn't willing to offer what he was looking to get for it.
A number of 4th gen and 5th gen distribution carts have popped up on eBay over the years. Was that $1,000 beasts cart a BIN price, or did it get bid up that high? I don't recall seeing one that expensive, that's pretty high for a DS distro cart. I have one of the beast carts, which I got for $137.50 on a BIN last March. Checking completed listings on eBay, one went for $199.99 on 12/27 and another for $225 on 10/12. I also picked up carts for Gamestop Deoxys back in Oct. 2009 and Winter 2011 Celebi in Oct. 2011.
Since I have a US Colosseum bonus disc, I wasn't really interested in the Gamestop shiny Pichu / Jirachi carts that have popped up, nor Karrablast / Shelmet or Secret Egg carts. Have seen a couple Keldeo carts. One had already ended by the time I saw it. The other had a BIN price more than I was willing to pay, so I made a bid to disable the BIN, but was ultimately outbid.
Gamestop seems much more lax than TRU about ensuring carts are sent back to Nintendo. Despite some Mystry Mew carts getting out in wild, I don't recall seeing Manaphy, Darkrai, Shaymin or Arceus carts show up on eBay.
I had forgotten about this, but came across it while digging through some old posts of mine on another forum - I had taken my Deoxys cart to a Dragon Quest 9 map event at a Best Buy a couple years back, in case anyone had brought along some Pokemon games for trading. After chatting with the Nintendo rep for a while and getting the impression that she wouldn't make a stink about it, I showed her the Deoxys cart. Her eyes narrowed a bit and she asked me where I got it, and how much I paid after I told her eBay. She didn't seem to care that I had it, and said that the price that I paid (a little under $150) was about the price Nintendo charges for unreturned event carts. She said those charges are made at the corporate level, not the store / region level, which might make it easier for some to slip through the cracks. I had also told her that TRU employees said that if their carts weren't returned that they wouldn't be able to participate in future events, but she said that wasn't the case.