Buying a Boxster that jumped timing

[WhiteSmokeLS1]

Anyone have an estimate on rebuilding one of these engines? If metal fragments went into the engine, I would assume the real expense is if you needed to bore it and replace the pistons... other than that, main and rod bearings, machine crank (maybe), rings, hone cylinders, and a gasket set doesn't seem terribly expensive. and depending on damage to the intermediate shaft... anything I'm missing?

Of course this is all assuming a worst case scenario.