Scions are found at Toyota Dealers and they have a no haggle pricing system. It is what it is.
You may find some 07 xA's around although the 1.5l engine is underpowered. As I've said, the xD comes WELL equiped for around $16k. Power everything, cruise, AM/FM/CD/MP3, four doors, 1.8l w/ 2ZR, front driver/pass airbags, seat airbags, side curtain airbags, ABS, front discs/rear drums. Plenty of options available if you want to upgrade the stereo and such. Alloy wheels are optional. 15" steel wheels with covers are standard. It's pretty peppy for a 1.8l and is a pretty comfortable ride for such a small wheel base. It's larger than the Yaris (of course) and a little smaller than the Matrix but there seems to be plenty of room. The rear seats slide for and aft x inches and recline x degrees. The 60/40 split is also standard. AC controls are a little different, as is the plastic trim around the radio/AC panel. It looks like there is a gap between the trim and dash but that is by design. Also, the plastic trim is a gloss black which may take some getting use to. Gas gauge is digital. I tested the auto which has an interesting accel to it. If you're rolling a punch it, there seems to be a little lag. It's an electronic throttle control IIRC. From a stop, WOT, it's pretty smooth. Nice shifts.
The 1ZZ is found in the Matrix/Vibe/Corolla. I thought it was the same in the xD but when I checked, I say the 2ZR designation.