optical bay to floppy bay adapter

So I screwed up and ordered a 3.5" (floppy size) media card reader for my rig instead of the the 5.25" (optical size), it just arrived and I relized my mistake. I was wondering if there are any adapters out there to fit this 3.5" device into one of 5.25" bay (my case has no 3.5" bays). I assume there must be but I need to know the name of what I'm looking for. I'm in Canada if anyone has any specific recommendations.... (amazon.ca would be great)
thanks for looking

found some on amazon but i assume there must be cheaper ones:

http://www.amazon.ca/3-5-5-25-Drive-Bay-Adapter/dp/B007VPIX4M

http://www.amazon.com/Lian-Li-5-25in-3-5in-Converting/dp/B0002EXHPO

~$12: http://www.moddiy.com/products/5.25-Inches-to-3.5-Inches-Drive-Bay-Adapter-Bracket-.html#.UN3uqaytYu0

Or of course, eBay: http://www.ebay.com/sch/i.html?_trksid=p5197.m570.l1313&_nkw=3.5+to+5.25&_sacat=0&_from=R40