Every month they continue to pay the previous amount.

What if I don't want to pay for the full price (e.g.

They are asking me to pay entire rest of 10k after insurance.

We've actually done a few this size as all single asset loans for clients who wanted a full 30 year term. 

So without my knowledge, I bought a turnkey property with a tenant that wasn't paying (never paid), I had to evict them (pay for the eviction), I had to pay for the turnover cost which was thousands of dollars, and I've been lied to by at least the property manager that came with property within 2 months of signing on the property (August).So I got everything fixed, the PM wanted to get the property rent ready.

Might be worth chatting with the great folks at Dirtfish if they would be willing to promote your vacation rental or even package it, they have wealthy clients coming from out of town regularly, and the local hotels are very expensive....any vacation rentals close by would probably make excellent options.

Either that resident agent service went out of business or the company owner stopped paying them to be the resident agent.

My mother-in-law is managing the state and doing some projects to get the house in better shape before going to the market.My husband and I would like to purchase the home as an investment property (rental); my mother-in-law stated that she would "discount" her part of the purchase, which means we would only pay 66% of the original price.I am trying to think of alternatives to borrowing the money.

Or he pays you less (or maybe nothing) and builds you a house on your smaller lot.How sure are you that this lot is able to be divided as you plan? 

But I do know that people often spend thousands on a beach house for the week, and depending on its proximity to the water, will pay even more.