I've serviced the previous generation of this bowler (named Striker) on location. They were plagued by display board issues likely due to board vibrations, flexing, and cracking. On top of that, I couldn't get my hands on schematics.

Also on the previous generation, the compressors burned out. An external air compressor was used as replacement

Sometimes the ball lift mechanism would fail/break.

The power supplies failed, so 5/12v switching power supplies were installed.

I imagine this version is a bit more improved than the previous generation I worked on, but there were quite a lot of failure points in the game that caused a lot of headaches. But, in a home environment, it wouldn't see nearly the same amount of wear & tear as a busy location.

Some more info on this model: http://www.pinrepair.com/bowl/pstrike.htm

I think $1k would be about right. Some enthusiasts might say a bit more. Some EM purists might say less.

On one hand, I think they can be troublesome machines. On the other hand, if you want a solid state ball bowler, there aren't many options at all. If you want an EM ball bowler, those can cost double or almost triple that (in the $2k-$3k range for something in working order).

There isn't a whole lot of market data since these things don't come up for sale too often.