From the Chronicle via SXSW Baby:

[At] least 400 more wristbands, priced to move at $165 and limited to one per customer, are going on sale Wednesday, 9:30am, at Waterloo Records (cash or credit only). There are no residency requirements, but the wristband must be put on at the time of purchase. More wristbands will likely become available through alternative outlets.

Related posts:

1. SXSW Music 2007 Wristbands on sale now!!
2. SXSW Music 2008: Wristband Info
3. SXSW Music 2008: Showcase Calendar Released
4. SXSW Music: 600 More Wristbands to Drop Tomorrow
5. SXSW Music: Last Chance for Wristbands