"The Shop on Main Street" has recently been restored in 4K, but as of writing my review this version is only available on a bare-bones BD-R as a "perk" for the supporters of Bijáky.cz, a.k.a. The Czech Film Foundation.

The older [not restored] Second Run edition - while a big improvement over the then state-of-the-art Criterion DVD - is clearly inferior to even the bit-starved MPEG-2 rendition of Bijáky's new master.
     My only complaint against the latter would be that it's too perfect - too clean & sterile, but I guess that's down to the poor encode which just can't resolve the fine grain one catches glimpses of in the few places where it's not been completely obliterated. Fingers crossed for a proper Blu-ray release, ideally in time for Christmas! ;-)