Thats a really good price assuming its in good condition. The sportster is a ski boat through and through, it has a low free board so it won't be able to handle a ton of weight but it can have the wedge added if it doesn't already have one so that will help the boarding wake. If you are looking to mainly wakeboard, and you plan on getting good then you will quickly outgrow the wake of the sportster. If you are looking for an amazing slalom skiing boat and a decent wakeboarding boat then this will be just fine for you.
A couple of questions, does it have the wedge, monsoon engine? Any other options like heater, shower, OB or CB, T/A vs. S/A trailer, etc, etc, etc...? The wedge IMO is a great thing to have so if it doesn't have one you should add it!
There are many people on
www.themalibucrew.com who can help you out if you have specific questions about the sportster, I only know a little bit about that boat.