SFT - stock body, resonable amount of ups, not too shabby condition (remember some can be 5 years old!) £100-200
Good nick with new board, frame and such £150+
Private labels will set you back £200+ apart from hybrid as they where a limited run so £280 is cheap, if you happen to come across a g-max they can charge you whatever they feel as there where only a handful made.
NXT - Mostly stock, couple of up's feedneck, asa, trigger, nothing too expensive, £250 mark.
if it has a new board along with the others £300 isn't out of teh question, depending
Private labels are fairly un-common over here so £400+ is reasonable, tremors where a limited run of 100 I personally have never seen one for sale so can't comment, the price of Russian Legions is expected to stay around what they are as they have split fromSP so mo more will be made, also PL shockers have ceased production for a short while in order for them to crash out theyre new gat, that no one is releasing the info for.