It is $250. Don't spend a lot of money on keeping it going but if you can get a year or two out of it it is worth it. Old full suspension bikes are kind of crap. Besides finding replacement parts as has already been pointed out they generally pedal like crap, lots of pedal bob. New full suspension bikes are so much better it is crazy but you aren't going to get one for $250, hard to find a decent used hardtail for $250. As for the headshock you can convert the frame with the right headset to run a regular fork if it comes down to it but that would be spending more money on it than I would want. Ride it as is and if you find out you really like mtn biking start saving up for a new bike.