Like I said, pilot and CFI pay varies greatly across the board from guys who charge the second they arrive at the FBO to guys who only charge for hobbes time and not for ground. Yes, the latter tend to do it because they just like to fly and they may have other sources of income.
Yes, there's much variation. My point is that the folks who have other sources of income typically seem to be less strict about charging because they're doing it for fun. Even though it's still fun for me, I also have bills to pay.
But all that aside Ted, let me ask you this - if you were asked to do a demo flight like that and provide instruction in the plane and you were not able to give the client what they asked for (partly because you failed at your own responsibilities as PIC)....would you really charge them for all of your time?
I am just saying that if that was me, I'd be pretty damn embarrased and would have apologized and walked away.
I suspect that this retired dude (being a friend of the seller) wants to stick it to me because I refused to buy his buddy's plane....but that is just my gut feeling.
You could say I feel like I've been taken for a ride....literally.
There are a lot of factors here that I have no way of knowing about since I wasn't there, and I also don't do things underhanded so the "sticking it to you" concept isn't what I'd do. So here's my equivalent scenario:
Bob calls me up, because he's selling his Aztec and wants me to do a demo flight for a perspective buyer. Bob is a friend of mine. He asks me to do it because I'm an MEI and the guy wants to be able to log instruction. I tell him I'm glad to do it, outline my rates, and say I don't care who pays it so long as it gets paid. Bob and I shake hands, and I show up at the time he prescribes. We BS for a bit until the buyer shows up, and I don't charge for the BS time.
Buyer shows up, my clock starts, and we get going on looking at the plane. We hop in, fire up the engines, and get going. Turns out there's an intercom problem that I don't know about because I've never flown Bob's Aztec before. I ask the buyer if he's ok with this, he says no, we return to base. Or he says yes, and we fly. Rather irrelevant. We get back, we're done, the clock is shut off. Total time is 2 hours, which in my case would be $100.
Buyer decides that Bob's Aztec isn't as nice as Bob said it was and leaves. I don't get a chance to sign the buyer's logbook for whatever reason.
I ask Bob where my $100 is. Bob doesn't want to pay me, and calls you up and says I still want my money for the time. Bob is simply trying to get the money out of you so he doesn't have to pay me himself. I don't care where the check comes from, so long as it's legit and my bank will accept it.
You say you feel you've been taken for a ride, and that's something only you can decide. I test flew a Cessna 421 a few years ago we were looking at. We hadn't discussed rates for anything, the guy seemed like a gentleman. Turns out the plane was a bad example. Radios and electrical system didn't function much at all (no intercom either), engines were timed out, same for props. Then the owner wanted top dollar because he said it was a low-time example.
I offered to fill their tanks (which were about half full) and gladly pay the pilot for his time flying with me. They politely declined both, but I wouldn't have complained or felt the least bit put off about paying.