I'm looking for a wooden shed and there seems to be various different types (overlap, shiplap, tongue and groove) as well as different thickness of the floor, roof and walls. It seems that overlap is the basic cheap shed whereas shiplap/T&G are the more expensive end of the market. If they all come with a 10 year guarantee, is it worth paying more for the shiplap/T&G? Are there any online retailers to steer clear of as the prices seem to vary between each. Do sheds normally come with something to raise them off the ground slightly? I've seen that you can buy a pre-made base but I wasn't sure if they are for when the shed is on a specific type of ground? Is there any issue with buying a few pallets and knocking one up myself as they seem to be at least £75+ for a 6x4 base which seems daft!