This service has a fee attached, but as the seller is unable or unwilling to pay this fee (or issues would have been addressed) a significantly reduced price is in order.

I suggest you not go 30  years with a note going to an estate, your high school buddy may very well look you up with an unpleasant attitude messing up his parent's estate in their elder years, but check with an attorney familiar with estate requirements.......you can also address such issues with a conditional demand feature, if this happens then they can demand full payment in 6 months for example.

If you got 3 checks in this case I would return 1/3  to the last know address of the decedent.

They are friends and have lived together for the past to addresses and their landlords checked out for references.  

Look up the address on the county website.

Confirm how this matter is addressed/worded in your lease, but I doubt there is anything that says they must leave during an inspection or that it would be enforceable even if there was. 

I may send a postcard first, then a yellow letter hand addressed, then a larger postcard, then a professional letter, etc.

As markets becomes efficient, the easy buck becomes a tad less easier.         

I ask for current & prior addresses, current employer, and take home pay. 

she should just be honest and say she will negotiate the contract, seems to me she is just trying to get as much as she can and hoping no one catches the charges. i would be very careful with that one if you decide to go with her. have someone look over the contract for you, fellow investor or lawyer friend if you have one. if you want, hover over my picture and send me a message with a copy of the contract and i will look at it, white out names and addresses if you want, be happy to look at it for you.