Wireless Printer 15ft Specification - Complaint!!!

I recently bought a Dell 968 Wireless All-In-One printer.  From the start, it suffered from intermittent issues with printing.  A print job would get caught in the que and plug up the works.  After clearing the que and re-starting the printer, everything would work fine until the next time.  I tried everything to resolve it without success.  When I got around to contacting Dell Tech Support, they said the printer must be within 15ft of the router!?  I was dumbfounded.  They tried to say that the wireless system in a printer is different than one in a computer and router.  I looked and found nothing in the specifications that requires the unit to be within a certain range.....you either get the signal or you don't.  Instead of 15ft, my printer is about 45ft (only 15yds, excellent wireless signal strength) and Dell said it wouldn't work.

I went down to my local computer store and they just laughed at that explanation.  I bought a new Epson and it has worked flawlessly.  Now, because I didn't figure this all out within the 21 day return limit, they are refusing to make good on this issue.  If anyone else has experienced this issue, please let me know.

If I don't get resolution, I will be proceeding with all the major Blogs, the BBB, and other public forums.