Hey, I'm not sure if you've found a coupe leather set yet but I just saw a set being offered on a post on another site for $350, shipped.
A couple of things: I don't know how good the set is aside from the pics and I noticed that the headrests have their logo sewn onto them. If that's ok, you can always buy a new set of headrests that are just plain. Anyway, I'd like to post the link but I'm not sure if it would go against any rules here. Reply if you're interested.
Good luck.