#1 a guy can bleach & properly clean it prior to install, the tub itself is fairly easy to guage condition... pumps, lines and filters not so much so keep an eye out for a really good deal and then if you have to change out a pump your still ahead of the game..
Lots of people feel the need to have the latest and greatest, buy a tub for $9K use it for 2-3 years and then feel the need to upgrade, someone might as well take advantage of thier loss....