Lost my surface pen, don't really want to spend $50 on another. Is there an alternative stylus, or a better price available on the original?

Any N-Trig will work, Amazon sells them but they will be $40 or more. There used to be some generic ones but those appear to be gone. Sony N-trig Pens will work, HTC Flyer, Acer R7

I got one on ebay, for a little less than 30, and I'll look at the other N-Trig options for future reference. Thanks.