Ah, now there's a question I can get my teeth into. By all means try telemark, but keep a few things in mind:
- You can get started relatively cheap. Get a pair of boots (Scarpa T2's are a good choice) right now or at the end of the season for about $200-300. Tele bindings (about $100) can be mounted on an old pair of alpine skis for now. Make sure that the skis are soft, especially in the tail, as tele skis need to more forgiving than alpine skis. Rossi Bandits work pretty well.
- Don't expect to become good overnight. You will be hanging out on the Intermediate runs for quite some time. Even after a few good weeks trying it out and it *seems* like you are getting good at it, you are likely to be just making fake-a-marks. Add a few more years and you will *finally* start making decent genuflected tele turns.
- It is FAR more physically demanding than Alpine skiing. One of the reasons I started to tele years ago was because I was looking to get the same sort of winter work out I got when I mountain biked. Your thighs and lungs will scream, and that's just the downhill part. It's a great way to build leg strength, BTW.
- One of the best aspects of freeheel (AT or tele) skiing is that you have wonderful options in the back country. Crowded lift lines? Resort powder being chewed by 10:00AM? No problem when you earn you turns, as the price of entry is too high for 99.99% of the skiing public. DO NOT go out there however, until you know what you are doing (preferably with a guide/avy expert).
Stick with it and you will find no other snow sport (in my opinion, of course) that is more rewarding. There is a satisfaction that you get with executing the perfect series of turns that I just never found w/ Alpine. Don't get me wrong, Alpine IS fun, but tele is just that much more fun.