They are quite pricey, but as you said it's an easier solution. I'm after a base that will really last as we are putting a posh summer house on top, hence first thoughts some form of cement.
Looking at building a summerhouse(9 foot x 11 foot)
2.5m height, as its within 1 metre of a fence.
It's on a slope say 65cm difference from top to bottom.
Now I know the height of the summerhouse is taken from the highest point of adjacent ground, and I presume the cement base at this...