@itchyfeet, I think negotiating is a good idea. Their first offer is rarely their best and final. The worst that happens is you get the opening bid, which is exactly where you started from, right?
One more quirk about real estate...Don't forget the 1031 exchanges that will defer capital gains on Like Kind properties. You can essentially roll up the gains and package them into apartments, condos, vacation rentals, farms, an office building, Self directed IRA, etc.
So you can go from a simple investment (say, a condo), to a more complicated one (vacation rental/strip mall) or the other way around. Any house you live in for 2 years of the 5 years prior to the sale can gain 250,000 for a single person, or 500K for a couple of exempted capital gains. That is a whole lot of untaxed gain, and there's no limit to how often you can do it.
That's a well known strategy among flippers. Buy a fixer upper, live there and fix it up, sell it for untaxed profit 2 years later, rinse, repeat.