We generally charge a starting price of $400 for a small Lathe bed (48 to 52", not including the saddle or tail stock)) the cost will only go up due to unusual wear (Over .015),
Bridgeport tables start at $400 also. we can only grind the thickness on the saddles, and the knee we grind the saddle side only, not the column side. The cost for Table, knee and saddle is around $1000, again depending on how badly worn they are.
The results are true within .0005, the rebuilders we do grinding for love the fact that the grinding eliminates or greatly reduces the need for scraping, They simply flake the requires surfaces put it together and run it.
Give me a call to discuss in more detail.