Javis Stone Walls- OK for 3mm?

 Came across these a few days ago.
Made by Javis, they are cleanly cast in resin and have a grey painted finish.
Measuring 11mm high- scales at 3ft 8inches-these come in lengths of 75mm about 35ft in 3mm.
The base needs flattening with a file or abrasive material and to butt join them needs a small amount of fettling. Weathering would bring out more detail.
At about 60pence a length these could be a quick and economic way to provide a boundary.
They will appear on Teignford- I'm just not sure where yet!