Shelbys have gone through the rooftop with their prices and likewise BOSS 302, be it genuine racers or cars in show condition:
K-Code convertibles have been still in the price range of an average Mustang enthusiast. Recently one T-5 K-code convertible was still offered for 42.000 here in Europe, but the seller draw back after selling his other Mustangs in favour of his K-code, which remains a keeper now. 
So watch out for prices of K-code convertibles to increase. This one is a true concours car acc. to the owner (which we must admit seeing the detailed shots).

I'm an enthusiast only as well, so I'm not keen on this development, but as with any classic car, the market demand determines the market value and I am with any owner, who can enjoy the money out of a sale of a car he bought when nobody thought about its value. So good luck to Gary.

Gary Gunter wrote us:
"I have a 1966 K matching numbers convertible. It won (best of show) in La Mesa, Ca, so it is a car to be proud of. The original engine and transmission were overhauled at Mustang Auto in El Cajon, Ca. and now has less than 600 miles since rebuilt in 2004.Documentation available....

All new interior-perfect! All new Robbins top , and all new chrome. All new steering and suspension - front and rear. All new exhaust .This is rust free and original sheetmetal floors. The tail-lamp panel was replaced with a Ford original.

It is a beautiful car, and it's a rarety....per the Hi-po Mustang Book only 53 convertibles were made with this drivetrain, with only 13 of them made with the automatic transmission option. The highest yet value I have been quoted for one of those (Shelbys) on the resale market was $400,000.00 us at an auction, from a Japanese buyer.  

My car was purchased from a Long Beach Ford dealer for 4,250 pesos- (copy of sales sheet available). It was purchased by a Mexican Consulate in Ensenada Mexico, and delivered to his wife for a present. I am the second owner and I had it painted through Mustnag auto in El Cajon, California. There was base coat and clear applied. All outer surfaces were stripped to bare metal and started over a new.

BTW - it's on sale for about 75.000 $