If you take good and proper care of your pans, and use them carefully, they should last a while. A lot of people here suggest not spending much $$ on them as they feel the pans will wear out relatively quickly. I felt the same way for a long time, but have since modified my view, having used a non-stick pan for a long period of time, and almost abusing it, to no ill effect. It is a skillet to which Cook's Illustrated gave a good rating. A friend uses her Calphalon non-stick (don't recall the model - maybe Calphalon One - but it's one of the top of the line skillets) frequently, and it's not shown any observable signs of wear in almost three - maybe four - years.
So, get a god one, use it with care and treat it right, and you should be OK. However, don't rely only on non-stick. Learn to use other types of cookware and your cooking will improve.
shel