Problem is, with the Sony multi-format drive I believe it's the only multi-standard one currently available and hence you will be placed on a long waiting list for it. There's an NEC one in the pipeline too but I don't think it's out yet.
There are several in the pipeline, Panasonic have been introducing one since last summer!! Don't know where it is though.;-)
I don't know why there should be such a waiting list. I passing through the USA late last year, went into a computer store in Miami and bought five of them $250 each. There wasn't any shortage there - or was I just lucky? Don't think so.
(They've all got good homes so I don't have any spares).