Building steps as a fund raiser

Our Trust built a set of steps for a private individual as a fund raiser. It was the most complex that we had built but the finished article was very impressive and gave the owners easy access to their gully. Our team suggested we make ourselves available to do another job if anyone needed a set. Maybe one build a year. It is not something that we want to be doing a lot of. Cost wise? The set in the photo is quite big and cost just under one thousand dollars all up, so a set half the size would be about half that.