It's going to depend on your area - but $120 is CRAZY HIGH for Internet anywhere I've ever been, except perhaps for high-end 4G cell plans.
All ISPs will not give a "business" the same rates as a home. This is because businesses require internet to run and generally their plans have SLAs attached to them.
I am FULLY aware of that, having had Internet in quite a few business locations - including where I am at NOW.
I stand by my "$120 is crazy high" statement - that's more than DOUBLE what I am paying on my CURRENT "BUSINESS" LOCATION for 100BaseT Ethernet service from a fiber backbone.
It is about double the HIGHEST I have ever paid for a "business" Internet connection, no matter where or what method of connection was used.
If you're talking the old T1 type stuff, THAT got mighty expensive - 20 years or so ago before DSL and Cable Modem got widespread.