since your in north west america or canada why not try "tiger direct" or "new egg" or "pricewatch".
Im pretty sure this is like the 50 biliionth time someone has asked for this kind of information on this site, i wish i was exagggggggggggggerating.
in australia i buy all my parts and clients parts from umart.com.au
$66 or so for a dual layer burner pioneer is a good price if you ask me, cheaper if you buy wholesale and over the intarweb.
you know google is a great web thingy for finding stuff in it, no really it is..
If no-one gives your an answer to a question you have asked, consider:- Is your question clear.- Did you ask nicely.- Are you showing any effort to solve the problem yourself 