One way to look at it is like this when buying things from reefers, they need to get ride of the animal for what ever reason, moving, too big what ever... So I know they want it out of the tank fast, thats were we come in the guy/gal
knowing that this fish needs to go sometimes in a hurry so the seller has to bend to make a sale. Depending on how bad they want to get rid of the animal depends on how much they will bend.
So the seller says 50 and I come back 35 hoping to get it for 40 in the end.
So yes I expect people selling things out of there tanks to be cheaper the the LFS
, not because there used but because they need to get rid of them.
You may not like it or agree with it, but thats the way it is..
I know I got over 4000 into my tank and I knwo that there is no way in hell I would ever get that selling it off..