I have an 18-yo domain, single word, 5 characters .com. The website traffic is insignificant. I've only got two other offers in all the 18 years but this latest offer is 20 times higher than the average of the two other offers. Assuming the buyer is legit, wouldn't it be prudent for me to list it in an Auction on SEDO with a reserve about 20% above the offer just to be sure I'm not being low balled? Would there be any downside of doing that?