I found a black one at a flea market last summer and my eyes bugged out when I saw his price. I was expecting to see $250 or so and when I saw $50 OBO I had to keep looking at the ground to get my composure back before he saw me drooling. I offered him
$30 and he said "how about $35. " I think it took 0.5 seconds for me to pay him and get out of there before he saw my grin and happy dance.