a lot of different things but i've never seen a SP problem that's unfixable or difficult
its a liquidation sale AS IS but i'd bet 99-100% restoration on 15 units and enough to to make 10 more out of the 30 if you have shell parts.
the graphite,pearl blue, and pearl pink 101 are all cosmetic damage and the special editions are not 100% but ive never had problems they take about 20 minutes to turn 2 into 1