What car is this:

https://www.mecum.com/lots/FL0117-269496/1968-plymouth-hemi-gtx-convertible/

Seems "cheap"...it says SOLD for $180k:

Highlights
True J-Code Hemi GTX Convertible
One of 36 produced in 1968
Original sheet metal
Original 426 Hemi engine
Dual Edelbrock 4-barrel carburetors
Original carburetors included
Currently equipped with electronic ignition
Original distributor included
4-speed manual transmission
Power brakes
Blue with Black interior
Black convertible top and Rocker striping
Bucket seats
Wood-grain interior accents
Thumbwheel radio
Painted steel wheels
Chrome hubcaps
Redline tires
Believed to be 19,000 original miles
Plymouth’s beat went on roaring into 1968, and if you wanted upscale Mopar performance that year, this J-Code Hemi GTX convertible was the ultimate way to travel. Introduced only one season prior, the GTX was now a refined premium design featuring performance driveline parts, unique styling cues and a stellar street-light reputation. It benefited from the new reworking of the marque’s B-body platform body, which had blossomed into a maturity, matching the age of the muscle-car movement. The engine design was now denoted on special hood trim, with the letters GTX centered on the grille, lower rocker areas and unique cast red-trim rear panel. Those facts do not make this a commonplace vehicle, however, and only 36 buyers opted to fit the ultimate Chrysler engine, the Hemi, into this ultimate convertible platform. The car offered here is one of those, featuring both its original sheet metal and original 426 Hemi engine. Beneath that notorious chrome air cleaner, the powerplant has been retrofitted with two fresh Edelbrock 4-barrel replacement carburetors and an electronic ignition for drivability, with the original Carter carburetors and factory dual-point distributor included separately with this sale. The engine here is backed by the A833 Hemi 4-speed transmission, Dana 60 Sure Grip differential and factory power brakes. Showing 19,000 believed-original miles, this classic is finished in a beautiful blue metallic with color-keyed 15-inch steel wheels, chrome hubcaps and redline tires. The top, twin rocker stripes and interior are in black, and passenger-area accommodations include headrest-equipped bucket seats, a factory 4-speed shifter, wood-grain interior accents—including the steering wheel and door panels—and a thumbwheel-style radio. As has been proven time and again, all Hemi convertibles are exclusive breeds which remain extremely popular among knowledgeable collectors; just joining that group of owners can prove to be a challenge even for the willing. This special Hemi GTX convertible is expected to draw attention before and during this auction, and will continue to do so for its new owner.