Parts. All that Purple. You can see the Kreon parts that form the core of the set in the upper right corner. A 1x2 Mod. Plate w/ Double Bars (open ends) immediately catches my eye, plus the 2x2 Hinge Brick Top Plates in the upper center. Then the Kre-O versions of Small Ball Joints in the bottom center and right. Plenty of other Mod. Plates, Brackets, Plates, Bricks, Slopes, Tiles, Tires, and Wheel Hubs.
Build. This one took a bit of work but I think I pulled something out.
Can you build something -- a frame, station, or starship -- right away? Yes. (+5)
Is it below, at, or above the golden ratio? Above. (-10) (The Golden Ratio is $0.10 per part.)
If you can't build a frame right away, or choose not to, does it have parts you should be able to put into use right away? Yes. (+5)
Does it have more than a handful of immediately useful parts? Yes. (+5)
Score: +5 (B+). Just a few more pieces could have given this a better score.