Had a yardmaster cheapo for a while.
Absolute shite. Crap doors and the condensation meant everything was piss wet through and rusted.
Really crap doors, oh and a sod to build with 10 bazillion self tappers.
I now have a metal agricultural shed with a fuzzy non-drip roof coating. It gets damp (the dartboard grows a bit of mould) but after having it for 5 years the stereo works, the laptop works, the beer fridge works, nothing is rusty and the bikes are in excellent nick.
Stop condensation dripping and metal is worth it, but even then the yardmaster doors were a racket in the wind and about as secure as the dickhead Johnson’s underpants.