While the home market may be growing, raising the prices of many used pins, the operator market has clearly nose dived. Sadly, I don't think the home market has the $$ to support the gap created by the death of arcades. The only option I could think of is something like pin2k. A system that was highly modular and easy to upgrade, relying on a big up front investment, but much cheaper prices for new titles.

Quoted from HP5P

If there is any appreciation in value of these old pins, it will be limited.

My two cents...and maybe that is all it is worth.

I would hold onto that two cents....it will definitely be worth three cents one day !