Not to thread crap (well, maybe just a little), but this monitor can be found cheaper from a known on-line store (
www.newegg.com), and other 17" LCD can be found cheaper at other stores (especially if you want to deal with rebates) and all have some sort of return policy or warranty.
Why would somebody buy these from you? Sounds like you didn't even pay for these (they were a screw up from your vendor and you got the problem fixed and kept the screw up), so now you are trying to gain from your vendor's mistake.
If that is the case, you could at least offer a discount.
Seriously, if I can buy this from NewEgg for $225.99 shipped (
http://www2.newegg.com/Product/Product.asp?Item=N82E16824009027), why would I (or anybody else) send you a check or money order for $240?