[name]

there are two versions of the MK III out there. the normal, which is mostly unpainted colored plastic and HT first attempt at the IM license and battle damaged version, which is essentially the "premium version" with a updated sculpt accessories and fully painted. they go for a pretty large amount of money since they where all limited runs, now that they are done being manufactured they cost reflects that.

imo if you are not a total completionist do not even bother with the MK III at this point and cross you fingers they repaint the MK I AU as a 2.0 MK III.

the VI may be a little easier to find as it also has been re-released twice now. once for the IM2 movie and a second for the avengers. both are the same figure but with different paint effects and accessories. the original IM 2 version comes with a full set of battle damaged parts which you are able to swap on and off the figure and includes a base. you will have to go for a secondary market for it since it is also not manufactured anymore and again where all limited runs. the suit being one of the more popular ones has also drives the cost up...

you should try sideshows forums (mod remove this is if considered advertising) where collectors often put up HT IM for sale or trade at non ebay rape prices.