Please, please,
please do not use inflated ebay buy-it-now auctions to gauge prices; Game Squad and his ilk will likely sit on those overpriced items 'til the cows come home. You'll find much better deals than $400 if you look at Expresses that have actually sold, such as:
$225 - with six games (all boxed, complete)
$133 - with OEM AC adaptor
$132
$125 - with six loose games
$101 - with TurboVision and one game
Simple high school economics, really. There's just a LOT less of the US stuff out there, which keeps the prices high.
Agreed. For every TurboDuo sold, I'd bet there was at least four Duos sold (three versions combined).