If you want it to self destruct after 2 years, those should be perfect 🙂
When I was looking…
1) The BillyOh expensive range were built out of crap, let alone the cheap range.
2) Most off-the-shelf cheap sheds are built from materials that are so crap, you can’t even buy them. The glazing they use on the 400 series is 1.2mm! They seem to have stopped stating the thickness of the cladding, but I seem to remember it was something ridiculous like 9mm or something.
My advice would be to find a local shed place – look at the sheds in the flesh then choose one. I know of a good one near my in-laws in Selby if that’s of any use. Probably double the thicknesses of materials for about 20% more cash (£400 for a 6×8).