As to the $120k estimate, I am probably a little hasty and loose with that too. 

Sure, buyer beware (I'll never buy a home sight unseen again), but terrible deceptive business practices and I can’t get the rent they estimated for this unit with it being only a 1 bedroom without a shower.After the sale, Ready REI was very slow on getting quotes and the few minor repairs done that we had agreed to.

., 2bd/2ba single-family homes) consistently perform well.Building on this, you can also analyze current rental rates relative to nearby "for sale" comps to estimate ROI.

I then ran a different ad and the cost was only 6 cents per contact. 3 cents higher than FB lowest estimate.

You mention offering homeownership opportunities to people who have been rejected by traditional banks.Do you have an estimate, or a track record, regarding how many of these homes will not be purchased under the contract and the borrower defaults and the home will revert to you to resell? 

Overall projections are not far off from estimates.  

Curious to hear any creative approaches that have worked in today's market.ARV and future value are speculative so when I am looking at property I am looking at it for longer term - does it fit within my strategy based on conservative estimates.

The property alone is worth a million but is generating an estimated $250k/ yr with the ability to add 3 units on site and acquire an additional 13 acres.

That is roughly 9% rent price appreciation over the original rent estimates. 

Based on the quality of this particular home, my rent estimate may be low.Note: you have to consider other factors.