Hans: your website is confusing.
It appears the following are included:
TPG 20 & 30 R ($129.95) includes right hand 20 and 30 T-Tracks, 1 flip stop, a calibration rod and two attachment knobs.
TPG 20 & 30 L ($129.95) includes left hand 20 and 30 T-Tracks, 1 flip stop, a calibration rod and two attachment knobs.
TPG 30 Early Adopter ($129.95) includes right hand 30 track, 1 flip stop, a calibration rod and two attachment knobs.
TPG 30 ($324.95) includes right and left 20 and and 50 T-Tracks, 2 calibration rods and 4 attachment knobs.
It looks as if the Early Adopter purchaser will get the 20 T-Track in March/April which, at that time, gives you the TPG 30 R set. I thought I saw that "early adopters" would pay $109.95 and would get a coupon for the 20 and calibration rod at a discounted price but I cannot, however, find where I previously saw this offer.
I also do not understand why anyone would purchase the TPG 30 for $324.95 when the TPG 50 set provides all of the items included in the TPG 30 set plus the 50 track.