Exo suits are not exactly space suits kind of thing which astronauts wear when they are in space. These exo suits are some techo-suit type of things which help user do heavy duty jobs in outer space or large techno environment.
In many small scale exhibitions and scientific-talent hunt competitions, gadgets freaks are seen to have built techno-exo-suits out of ordinary and easily found materials like chrome-myolybdenum steel alloy, big twisted coils, armatures etc. These suits even perform quite successfully in lifting small but heavy objects. This kind of suits do not cost more than $1,000 or 2,000.