Wayne summed it up very well. We all have to see how our flying addiction cuts into our famalies time and finances. I work a second job to fly and probably would not work a second job if I wasn't flying.
Another "ploy" that an airplane scalper used when I sold my first 150 in 1990 was saying over the phone "this is just what my wife and I wanted. Can you keep it until Monday when I can get money from my bank?" I said yes and maybe told 2 or 3 people that it may not be for sale since a guy and his wife plan to buy it. The guy and his wife did come to look at it but said it wasn't just what they were looking for. One could work with all potential buyers cordially, but insist that he who pays the amount first, owns the plane. It will not be put on "lay-away" for anyone.
Just a note, back then I bought the plane for around "7900 and had it for close to 2 years, changed jobs, moved away and sold it for $7400. This was the going rate back then for a average 150.