It looks to be all there, the drive band is an easy fix, in the picture, showing the back of the wheel, the wheel is placed in the uprights backwards, the cam that's attached to the foot treadle linkage, the wood slat, should be to the back of the wheel.
If all it needs is a drive string it's a steal. The wheel, the table, the MOA, and the flyer, with the bobbin for $70.00, I would buy it if I could only use one or two parts.
Nature does not hurry, yet everything is accomplished. Lao Tzu