Arches vary in every aspect. What suits one decor and client's taste won't suit another. They can cost between £400 and £500. I've never done one over £250 and they all include a matching (wooden) keystone, cube and oblong ashlar.
An arch can be made in any way you want - including matching to an existing set of stones.
The one on the left was made for Coventry Lodge of MMM and on the right, Millenium Lodge of MMM.
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