Geeks.com currently has two USB receivers for $39.00
Here's a link to the CF version:
Here's a link to the USB version:
Oops -- the USB version's on sale today (until Weds) for $34.00. You can save an extra $1!
I bought the USB version last week, threw in a CAT5 crimp tool and a cheap USB mouse and paid $8 for the cheapest shipping option. I used the coupon code DEALNEWS for 10% off non-sale items (thus the $35 in the topic title).
I live near Detroit. I placed the order on Tuesday, and it arrived Friday or Saturday (I don't remember which. I had no time to look at it until this morning).
I plugged the USB version into my SL-C1000 (running pdaXrom) this morning, fired up gpsd and verified the connection, started roadmap, (waited 10 minutes), (moved the antenna to the top of my bookshelf), and it found my current location, from inside my office building. The console lists 10 satellites currently in view, and varies from a lock on 6 to none, but that's still pretty impressive for inside a building. It's a lot better than the 1st gen handheld which was the last GPS device I used. It took 10 minutes to find 1 satellite standing next to a window (I can almost see a window from where I'm sitting now), and I eventually had to move outdoors to get it to work.
The USB version I have has a 6 foot cable, and a magnetic base, so you could stick it to the top of the car, but the magnet isn't particularly strong, so I don't know whether I'd trust it at highway speeds.
I'll try it in the car later, and see how it tracks.
I know nothing about the CF version, except that it's about the same price.