Take a crack at fixing the table. Wood can be glued and nailed, and metal (to a lesser extent) can be fixed also; I have used JB Weld and other 2 part epoxies along with wire to act as rebar. I also use Howard Restore-A-Finish on the wood and have been very happy with the results.
If you don't want to tackle that table you can look for an "empty" Singer treadle table, it is likely that your machine will drop right in.
Once you start working on these machines, it's tough to stop...be warned!