Help please! Compression test results

So I put a deposit down on a 2005 RX8 GT with 61k km on the odometer, sale pending compression test results. Compression test results are as follows:

rotor 1: 6.5, 6.7, 6.3 kg/cm2 @ 229 rpm
rotor 2: 6.8, 6.8, 6.8 kg/cm2 @ 230 rpm

I got photographs of the compression test results from the testing unit itself. I don't believe these have been normalized at all.

So if I read the compression testing guide correctly, here's what I end up with (I got the altitude of the dealership from Google Earth :P):

Rotor 1
Foxed.ca Rotary Compression Calculator Results

************************************************** **********
Initial Data:
Face 1: 6.5 PSI
Face 2: 6.7 PSI
Face 3: 6.3 PSI
Cranking RPM: 229
Altitude: 440 Feet
Engine: 13B Renesis 04*11
Compression Ratio: 10
************************************************** **********
Corrected Values:
Face 1: 7.16 PSI
Face 2: 7.38 PSI
Face 3: 6.94 PSI

Rotor 2
Foxed.ca Rotary Compression Calculator Results
************************************************** **********
Initial Data:
Face 1: 6.8 PSI
Face 2: 6.8 PSI
Face 3: 6.8 PSI
Cranking RPM: 230
Altitude: 440 Feet
Engine: 13B Renesis 04*11
Compression Ratio: 10
************************************************** **********
Corrected Values:
Face 1: 7.47 PSI
Face 2: 7.47 PSI
Face 3: 7.47 PSI


It looks to me like the one rotor is borderline, but not sure how serious it is.. Experts of the interwebs, please tell me if I should buy this car!

Thanks in advance!

Help please! Compression test results