I bought a mostly metal stylus online at ebay that is a lot better than the stock stylus. It was $2.99 for the stylus and $2.99 for shipping. It arrived in one to two weeks as the seller said in good condition. The only thing I did not notice is the cap for the pen is about 40% of the stylus. This means an already small stylus becomes an even smaller pen. I am getting another stylus because I want a bigger pen for my rather large "meat hooks". I thought the Axim had a rather small (narrow) aftermarket stylus/pen (I used to have a Palm Tungsten with a aftermarket stylus/pen); but the X7510 has proved otherwise.
For the price you can not beat the stylus on ebay, and if you do not mind a tiny pen, this is the stylus to get.
Stylus Pen for HTC Advantage X7500 X7501 X7510 Athena - eBay (item 290258687578 end time Jan-03-09 22:55:55 PST)
Food for thought: Why does the largest PDA have the smallest stylus?