A 2006 is 6 years old. There should be a number of things to look for:
1) Look the hulls over carefully. that's what floats your boat. Scratches aren't an issue, however look close at the seals of the hull to the fittings.
2) Look at the rigging. If it has gotten 'copper' discoloured (look at the fittings for the shrouds) that may need for a shroud replacement. Same goes for the halyard and your mainsheet. A 'soft' and bleached halyard means it needs to replaced. The wire/rope connection should also have no 'copper color' on them or it is only a matter of time until you pay for a new one.
3) Color: Look at the main sail. Is it bleached out? If so, it has been 'sun struck' and possibly worn out by overexposure to the sun, Not a cheap item to replace. Plus if it is worn out, you'll end up getting frustrated with a sail that can't perform.
4) Look at your rudders: Those are the ''foils' that keep you smoking. You can sand and polish out any nicks but if the rudders have chunks missing, so will your sailing due to drag. Look also very carefully at your rudder pins. Shake them hard with a wrench. If there is looseness, you are in for a costly repair job. The same goes for the bows. Try to move them. If there is movement, you've truly got a worn out boat that you may want to pass on (for obvious reasons).
5) Your trampoline is the 'deck' of your boat. If it is discolored or there is wear around the rails to keep it in place....again a costly replacement.
6) Look at the rivets that make up your boat connections. They need to be flat and there should be zero movement when you work them hard to what they are attached to.
I wish you luck in finding your right boat, but like any 'aged Lady' caution needs to be used to insure that you don't carry someone else's baggage.
Best wishes SailScott. PM me if you need further detail on how to look 'really' close at your possible purchase.
Always looking for ways to make good things 'Gooder'