Bag. MSRP is $3.99 for a $0.09 Price per Piece.
Parts. That Frame part in the upper right corner just ruins this set for me. The Motor Brick is nice as are the Mudguard Tiles and the 1x1 trans-color Round Tiles. I've been needing one of those 2x2 Studless Slopes for a while so that really helps too. Wheels and Rims are never really useful, but there are plenty of Plates, Tiles, and Slopes that are.
Build. I managed a small IO Frigate. 2Ra/1B/1Y/1G/2W.
Can you build something -- a frame, station, or starship -- right away? Yes. (+5)
Is it below, at, or above the golden ratio? Below. (+5) (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? No. (-5)
Score: +10 (A-). Enh. A parts pack at best.