You are being robbed at the suggestion of that cost. SHOP, SHOP!
240 volt or 120 volt, all the same except wire size. I pump an apartment, with a NON grinder, and as long as you can keep tampons and pads out of the system, they work fine. never had a clog in 10 years.
This unit passes huge solids, and the inspector with his wrong idea of needing a grinder will never know. And you can buy a nice used car with the savings in $ USA made too.
Okay this system blocks my links. Go to I-R-A W-O-O-D-S site with Zoeller in the search and look up residential packaged systems. the last one is about 600 bucks that I posted.
You need to know your lift height.