You read my mind and posted it here! I picked up two 100s late last season and what I paid for them I thought was on the high end until I talked to a few people at the LDS. On that note I spoke with the owner of the LDS here and she referenced me into the high 3s or low 4s for an HP 100 or 120. (Don’t remember the specifics as we talked about a few.) Against my better judgment I looked on line at new ones to get a reference point and by the time you pay shipping and then have the tank VIP and O2 cleaned (as valves are removed for shipping) you are better to hit up the LDS and build those “frequent buyer points.” What prices have you dug up?