The limited release of the Denny Kim / Iminime / Cult King figures allows them to inflate the prices far beyond the integral value of the figure itself - they even apparently use the cheapest knock-off bodies available as their base.
And if you look through the photos here:
The Bounty Hunter - The Bandit - The Cowboy Pack - Machinegun
Not all the details look particularly 'high end', nor warrant the higher than usual value. (Apart from Blondie's poncho!)
Okay, so Redman recast the heads, but they reproduced the figures on a larger scale which enabled them to be sold at a price closer to that which the Iminime/Cult King ought to have been in the first place (if they were less limited).
Redman also made some improvements over the Iminime/Cult King versions: such as giving Angel Eyes his correct Remington 1858 New Army (instead of the Colt 1851 Navy that Iminime gave him - an unforgivable error at that price
).
Redman also constructed the spurs more accurately.
Iminime:
Redman went closer to the real thing by using D-ring 'leather' straps as on these replica Blondie spurs:
Redman did, however, copy some of Iminime's other errors, such as giving Angel Eyes' Remington to Tuco as his lanyard revolver instead of the Colt 1851 Navy.
As mentioned before, Iminime gave Angel Eyes a Colt Navy, which Redman presumably made anyway to give to Tuco as an extra!
Incidentally, since I had a muscle body arrive today that came with spare long ankle pegs I've put them onto Blondie to help get him to the correct height. His jeans were already long, which implied that maybe this was what Redman planned to do themselves at one stage.
I previously put the Josey Wales onto a Coo Model body to make him taller.