They responded with a counter offer of $100k, final offer.

Seller can choose to look at, ignore, respond to, counter or accept any offer he wants at any time (though there are procedural items his agent should take care of when counter-offering more than one offer at a time).Seller doesn't have any responsibility to look at, respond, counter or accept your offer for any reason.

It will either say CA- counter offered or OBS other bid selected.

One time I was representing a client and it got into the offer/counter-offer stage.

Can you counter a HUD counter offer

Expect all offers will end up under contract, with or without counter offers.

There is nothing that you can argue about; out you go.I suggest that you counter offer and tell them you will move out if you get the rent you paid in advance returned, plus the $500 they offered.

As a general rule always plan for a counter offer unless you are paying list price.

there was an email sent yesterday almost right after we sumited our counter offer of 90,000 including closing costst saying that the investor would not take less then $100,000

If properties don't sell, they will continue lowering the price until they do.More often than not, you will likely receive a counter offer from the REO asset manager, even if you shoot them a very low offer.