u have to buy in stacks of ten, u would be lucky indeed to make +9 with less than 20 tries. If u got a point for everyother spin of the wheel that would be a 500 batting average and use 18 eyes/17 miles. There is no mile required for the first point because there is no point to lose in degrade.
If u can bat 500 enhancing weapons even with nines, I have work for u