"NFA transfer fees $150 per serial number"
Hopefully what you felt wasn't during or after you paid a $150 NFA transfer fee, because that wasn't love you felt. I'm sure you purchased it through them, because no one is paying that for a suppressor transfer.
Uhhh..... yeah, I bought it from them. Personally, if I were a Class III dealer, I don't think I'd want to deal with transfers. Doesn't the transferring dealer have to hold the item for the entire time the stamp is awaiting approval? I don't think I'd want to store someone else's crap for 5-6 months and do the paperwork, so's I could make $25. Plus the woes of possible insurance issues if something should happen to it, etc.
Maybe that's just me.