how old is the Delta you are looking at? any pictures? not my first choice of a grinder so depending on your budget these might come up on Craigs in your price range. Baldor (occasionally a good old one is offered, but don't wait for one because might be a long time), Craftsman block and GJ has a thread with awesome information on it, Dayton, Jet, and a good old Black and Decker.
there are some nice old and huge ones to look at on the vintage grinder thread if you want to see any more choices and read more about them.
if you are not planning on using the Delta much it might last you many years, but if you are planning on using it all the time then you might want to pick something else.
good luck