I think you may just be out of luck if you're trying to use the regular version of Ebay. If I'm not mistaken, PIE (for WM 2003) was based on Internet Explorer 4...so it wouldn't be surprising to me if current (flashy/complex) websites would crash it. I know that I have had the same problem when trying to sign out of the desktop version of Yahoo Mail and have never solved it (nor bothered to find out really).
If you can make do with the mobile version of Ebay, try going to
eBay mobile . Otherwise, you may have to spring for a more advanced browser such as Opera Mobile 8.65 (and pay money for it).
Edit: I just tried to go to
eBay - New & used electronics, cars, apparel, collectibles, sporting goods & more at low prices on my x30, and I also have PIE crash while trying to load it. I doubt that this issue is unique to the x3 and is just one more indication of how dated PIE is.