Well, if you live in Western Canada anyway, Click on the .pdf flyer in the below link and look at the Vista prices. This is retail and not OEM as far as I can tell. Doesn't say OEM anyway. Valid only until the 24th.
http://www.londondrugs.com/msib20/Flyer/dec_17_07_hitech/page12_13.html
http://www.londondrugs.com/msib20/Flyer/dec_17_07_hitech/page12_13.html