I would be one of those people. I saw recently on eBay that an EZ-Flash IV went for a RIDICULOUS amount of money. Check it out: http://www.ebay.com/itm/EZ-Flash-IV-Flash-Card-with-1gb-Micro-SD-Card-for-Game-Boy-Advance-GBA-or-DS-DSL-/171028957299?_trksid=p2047675.l2557&ssPageName=STRK:MEWAX:IT&nma=true&si=buv5D064aj4O8PYGqwMtaNA6Uzk%3D&orig_cvip=true&rt=nc
Kinda makes me what to sell mine...