well, acording to the article by anandtech at the CES, the first bluerays drives for computers are going to cost something like...1k. and they can't read/write regular cd's either for now.
(In order to get the product to market faster.) and media will probablly be kinda expensive. while mass production is bigning, it not at the point where the advantegs of 25gb blueray dvd outway the advantages of dvd (cheap and effective). i'd get a dvd burner. there is no reason not to get a dual layer one as they cost pretty much the same as regular ones. i got my SONY DW-Q30A (actually an oem Lite-On model) for like 40~45 bucks. it works great at burning and reading. it's also cheap. to conclude, get a dvd burner. Pionner and NEC, Lite-On and BenQ are considered good brands. good luck.