Quoted from Gunnut40:I bought my first pin 3 weeks ago and I love it! I had to replace a coil and mosfet....but I got a better deal cause the problems. Just know you will have to work on them. No reason to wait. You should be able to sell your machine for about the same price once you save up again.
Since you are just starting out, and have some Pinheads near by, you can probably find a game that is working but has a few glitches that need attention. I like the advice of going on the cheaper side to start. Should you find that pinball at home isn't working out, you won't lose much (or if you get a machine that is tough to resell). Also, you will have an easier time learning the switches, lamps, etc. under the playfield. The newer the machine the more "stuff" under the playfield. If you have sausage fingers like me you'll find newer games a little tougher to do work on without squeezing wires and things out of the way while holding a part and a tool and a lamp and another tool and trying to curse!
Older machines have plenty of charm, and just having a pinball in the house is magical to start. If you need to save up a year or more than I think you should pull the trigger now and get something then sell later, if you are a few months away that is a different story. See, we are all willing to spend your money!