Here's a PDA phone with a resistive touchscreen that used to cost as much as (if not more than) a laptop these days. The O2 XDA II (code named "Himalayas") went for some $1000 back in '03, ran on Windows Mobile 2003 and could connect to the internet via WAP, GPRS and optional WiFi, act as a phone / WMA & MP3 player / camera / voice recorder. The combo of functions haven't changed very much these days, mostly improvements, so this was one of the earlier smartphones that managed to pack all these functions for a hefty sum.
The PDA phone shows its age on the outside: faded wording and silver coat on the front casing, a chip off the corner of the black plastic frame, and the ABS rubber stopper for the earphones jack is gone. The SD card slot doesn't seem to work, although I suspect it's due to the custom OS - tweaking with SD-WiFi settings / flashing to OS 6.5 (the highest OS supported) might do the trick and revive it, but I have not tried it.
Buttons are responsive, the screen is fine (screen protector has hairline scratches), and no battery bloat. A full charge takes about 3+ hours, and can last about a day if the phone (SIM) function is disabled. Runs very stably on Windows Mobile OS 6.1, even if you hard-reset it. Also, all standard earphones / headphones (w/o mic) are accepted.
Comes in the complete box set (manual, charger, sync cradle, battery, pouch, stylus, CD, stereo earpiece) and an additional SanDisk WiFi card (SD slot). Good for hobbyists, collectors, or anyone who wants the feel of a large screen phone at a fraction of the cost.
Internal: 8.5/10
External: 6.5/10
$20