These are the prices I found on Amazon.com

Fit Kit #4002 '06 Audi Q7: $75.89
480R Rapid Traverse Foot Pack: $158.95
ARB47B AeroBlade Bars: $142.95
TOTAL: $377.79

Thule 544 Lock Cylinders: $46.95 (for that extra security, piece of mind)

@Kaena Point what length AeroBlade Bars did you end up using?