The first thing I think you need to do is decide what table you want. From there you need to decide how nice you want to make it. That's where the money comes in. This is how it's been going for me.
I wanted a GC IV but was willing to look at all Gold Crowns. I figured I was either going to find a rather pristine one or it was going to need some restoration work. I also knew I was going to have the rails done by Mark Gregory. I got lucky and found a IV in really nice shape having never been used commercially. Probably a 9 out of 10. Only problem to me was it had drop pockets. Not that big of a deal, I'll locate a ball return. Well, easier said than done and did I mention cost a few bucks. Now here comes the easy part. I'll disassemble it and bring it home. Not a difficult task for someone who's built a few cars and a HVAC mechanic by trade. I disassemble it only to find that the guy who assembled it could give a shit if it was done well. I find the slate frame has all but one bolt stripped with one so bad I can't get it out. These are large course threaded bolts. Almost hard to believe. I now need to buy all new bolts and spend time repairing this stuff. Something I would never had thought would be an issue with a table. Another thing, the slate is heavy and awkward. Fun moving from one basement to another. What I'm trying to tell you is you never know what you may run in to and it can get costly.
I'm going to have some money into my table but will have exactly what I want. A near mint GC IV with 4.5" pro cut pockets and rails done by Mark Gregory, covered in Simonis 860HR with a set of Centennials. Barring unforeseen circumstances I'll be using this table for 20+ years. If I'm lucky more than 40.