Title underwriters generally will not insure interests based on a tax deed without a quiet title suit against interested parties because of the difficulties in confirming proper service on interested parties. 

Hi Elyse, I'm an investor and agent based in Miami.

Generally it's based on the city, but you'll want to check both city and county. 

Found the link below that is interesting and describes market-based pricing.

Hi Austin,Insurance business is complex, and I wouldn't rely in an agent that is asking you to leave things "as is".In my case, what worked is to build relationship with at least 3 to 4 agents, so I can easily email my portfolio and they quote me based on that.

I good way I have found to generate leads is to call the Section 8 reps' to let them know that you have a unit that you're looking to fill and see if they have any clients who have a voucher that match your property. 

I'm based in the Lowcountry of South Carolina.

Merchants Bank MN See Pavel UshakovPenFed - max 3 other properties, 89% LTV Regions- yes HELOC but no LOC SCCU Florida 70% LTV, 6.25% interest only, not LLC Sound CU "non-owner occupied HELOC, capped at $150K and interest rates are prime + 2%, 3% or 4%, based on credit, not to exceed 70% ltv.”S&TTCF BankTD Bank TIAA Direct was EverBank Tower FCU, all states except TX, max 45 DTI, green card ok.

I actually work in Huntsville on the base.

My recommendations would be to re-evaluate the price point and make sure it matches other properties nearby.