Not to be rude or anything but anyone who is looking to get a Nook is going to look at this price and say well I can get it for $99 from Barnes and Noble. I get that you are selling it with a cover and that but most people would end up ditching the cover and getting one they picked out and liked because well that is part of the fun of getting a new toy! Either way tho cover or not $150 is pricey for a used Nook.
Not to be rude If looking for a Nook, the $99 is REFURB/preowned, and the Cover is Oberon, real leather, and THE MOST POPULAR one out there. The cover sells for $50+ used, guess you don't own an Oberon. Could google for Nook Classic 3G, as the WIFI price may have dropped to $79, but that is immaterial here. Also decalgirl skin is another $14.95 + s/h.
You should never hi-jack someone's sale thread to input your opinion, how would you like someone doing it to you. I suggest you check out completed listings on ebay to see what items are selling for before omif.