Some carriers will write rental policies on HO-3 or HO-5 forms, which are built for homeowner's and then add in endorsements to cover loss of rents and other non-owner-occupied endorsements.

Generally a few dollars more than if one of your current carriers can do it but not much more3.

My insurance agent says I've reached the 5 property max to receive better pricing through their go-to carrier, Vermont Mutual, and will now have to bind with a more expense Massachusetts state-sponsored program.

Now the home has to go back on the market, but the hot summer season is over, so now they're trying to sell this pig in the slow fall season, and it's been vacant for 3 months at this point, hopefully squatters don't come in, oh and their insurance carrier just tripled their premium since it's now long term vacant real estate.

I do not accept cash (or any other form of payment, for that matter) in person, via US mail, carrier pigeon, etc.The OP's tenants can use their cash to pay via online portal or some other manner she wishes. 

There is about $10,000 worth of repairs that still need to be done by the insurance carrier. 

There are many carriers that are taking on massive losses due to water damage claims (old cast iron pipes beyond life expectancy).

We had a few different carriers quote in the range.

@Greg Carrier@Greg CarrierGreg, would mind sharing that with me as well? 

No matter what, you want to let everyone you know what you are looking for: Wholesalers, Real Estate Agents, Other Investors, Friends, Family, UPS Drivers, Mail Carriers, and anyone who drives and knows the area.