T-Rex has new several sets of Panzer III&IV tracks, plus different models of StuG III return rollers

This is partial text from the full article (usually with photos) at https://armorama.com/news/t-rex-panzer-iii-iv-tracks-and-stug-return-rollers
T-Rex has new several sets of Panzer III&IV tracks, plus different models of StuG III return rollers
Look great but they cost as much as Friuls. I thought 3d printing was cheap,