It's 100% free for the property owner unless you want to pay for additional features such as their "Rental Estimate" property analysis.The tenant is not charged a fee unless they opt to pay rent with a debit or credit card (2.75%).I also use their screening services to accept applications, the applicants can apply and pay for a credit/background all at the same time. 

.- on 203k loans make sure your loan officer connects you with a local HUD consultant who can review the property to let you know the min required repairs that will be required by FHA so that you can decide your "wants," and "must haves," and find a fine balance in between the two to arrive at the highest and best use of your proposed purchase- 3-4 units with FHA also need 3 months of reserves- 3.5% down payment is 3.5% of the total cost which could consists of purchase price + reserves + inspection fee's + rehab costs + closing costs + prepaid interest up to 6 months.The cool thing with 203k's are that you can use the ARV rental income with the after improved property as well so in a way 203k FHA's have an easier time meeting the self sufficiency rule with FHA 3-4 financing since regular FHA financing on 3-4 units without 203k will have to use the lower of current rents or market rent.

= ~$2400 (Estimate)Pre-paid insurance?

My tenants are on auto-debit for the 1st.

Debit card is fine.

You will need to have SOME type of savings in order to show reserves and/or have any funds for closing costs and/or prepaids that are not covered by the Seller's contribution.In the meantime, I would open up an account with a local credit union. 

I've had tenants do just that and leave two month's prepaid rent in escrow!

I carry my business debit card with me everywhere I go to be sure expenses are billed to the company.  

I am transitioning to VerticalRent for other reasons so things should move a bit quicker. 2 things that might ease your mind on the 'no guarantee I will get it...'1: One tenant tried to use a prepaid debit to pay rent...cozy rejected it right away.

Don't forget to factor in pre-paids (such as insurance premiums), prorated taxes, title insurance, doc stamps, and closing/title fees.