Do you mean a standalone burner (one drive to put the master disc into, the other a blank) or do you want a CD-R drive for your machine ?
Standalone I can build for you, have the bits in.
If its just a drive, it's for a tower and CDs only then I just weigh them in so you can have a couple (untested) and see if one works for you (IDE or SATA)
If its for a laptop I'd need to see it to match the drive/bezel, and/or if you want to do DVDs as well you'd have to throw a couple of quid in the tea kitty.
I have new ones as well but have to charge sensible prices on those, sorry.