I just looked on a populour Electronics website (starts with M) and they got a few, all about £35 - £60, and they do HD modes etc
i.e plug in a component lead and they out put to VGA
im tempted to get one
if u know this "m" compaany, have a look, are they ok?
EDIT//
Actualy, its M***** where i first saw a few, buts its a consolde website that lists them, something like "console plus"....