As long as you like the art and bought to keep your in good shape.
I frequent several auctions per cruise and especially like when they have high end stuff for display like Picasso and things you usually wouldn't see outside of a museum setting. That being said they make up retail prices to be able to say its 75% off that made up number. It's like buying a car if you paid close to retail your a sucker but if you love the car then who cares.
I've seen a lot of people get excited and bid and immediately say crap what did I just buy. Like the free art you can win that you have to pay shipping for and buy the $250 frame.