I bought this tile set some time ago, but couldn't get it to work the way I wanted in Foundry. Recently I learned that TileD supports Hex grids and they can be used there, though you need to put the tile sets files together yourself for use in the program. It's a bit tedious, but only needs to be done once, at which point you can just load the TSX files for future mapping endeavors.
Amazing tile set, easily worth far more than the asking price!