Be prepared to discuss and potentially adjust your offer based on any feedback or counteroffers from your landlord.Discuss financing options: If your landlord is open to selling, it's worth discussing potential financing options.

The bank made a counter offer... it went from 74,000 to 25,000 and I agreed.

They even give you a chance to make a counter offer.

Send your best counter offer back and let the buyer's agent figure it out.

I countered it with a letter .. not a standard counter offer form.. it all works.. contracts are contracts.. although I have written many a contract in my land days on the hood of my Toyota 4 runner LOL.. but it was a custom land sale form that my dad created in the late 60s .

The original offering was to keep you happy, but the counteroffer was absurd and trying to take advantage of my generosity. 

I hear you, and I updated OP to reflect "highest and best"  The point being there is no counter offers, no feeling them out.   

Our realtors that we work with know that a counter offer will generally be a waste of time as our numbers wouldn't support a higher price.

@Ethan Mastrodonatowhen I bought my first deal I made an offer, they counter-offered, didn't reply I just let it sit. a week later they came back and accepted.

So he drew up a counter offer and had me sign it.