There has been some dispute over what the Warlord Games Marder III kit represents.
Evidently the mould makers have a view.
This of course contradicts the box description as an AUSF H which is the PaK 40/3 armed version with a different superstructure.
Having read the instructions (are part numbers too difficult to put on the sprues - referring to the sprue photographs is irritating), there is a lot more detail than would be expected from a plain upscale of the PSC 38(t)/138/139 kit. Some of the parts however do show their origin, the base superstructure sides are at least 4mm thick (if not a scale foot) and the top deck (shown below) is still rather thick. However this is hidden by the sides. The track guards however are not excessively thick.
There are a couple of issues with the instructions (so far). The nose is added to the chassis after the track units have been added. This is not possible without damaging the rivet detail on the inside of the sprocket back. I would advise adding the nose to the hull tub before adding the track units.
I have also not fixed the gun mounting to the hull, it appears to be able to be placed on the hull without fouling. It should make it easier to work with.