You could get decent wheels for cheaper in the form of SRAM S30s (replaced by Zipp 30s), if you source around for used. Their shape is a little different though, and I think Flo has a shape that's closer to optimal.
Other contenders include Soul S3.0 wheels (Bike Soul[/url], which have a similar rim shape to SRAM S30 wheels, but they're probably not CFD designed), custom wheels built up with Pacenti SL23 Rims (Fairwheels Bikes, but not as deep at 26mm), and perhaps Neuvation Cycling's R28SLW wheels (also not as deep at 26mm).
Still, given my awareness of the other options, I did choose the Flo 30s...
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Chewie
Slowtwitch Aeroweenie since '06
Other contenders include Soul S3.0 wheels (Bike Soul[/url], which have a similar rim shape to SRAM S30 wheels, but they're probably not CFD designed), custom wheels built up with Pacenti SL23 Rims (Fairwheels Bikes, but not as deep at 26mm), and perhaps Neuvation Cycling's R28SLW wheels (also not as deep at 26mm).
Still, given my awareness of the other options, I did choose the Flo 30s...
___________________________
Chewie
Slowtwitch Aeroweenie since '06