that sounds like a very good deal. i am not a dealer, but i bought a 3-4 yr old hs jet setter at an estate auction. new price is about $5500 here in my area. i put an ad in our local green sheet, asked for $2900 and got $2600. this was for a 3-4 year old spa with a cover only. nothing else. it was in great shape, but had a couple of scuff marks on the cabinet (probably from being moved).
for a brand new, unused tub, that sounds like a very good price....IF you like the tub and its comfy for you.
if you dont use it much, it is not worth it. you should put that $2500 towards a tub you will love and use alot....