As a freelance UX designer/consultant with a particular primary industry, I'm thinking of offering a service for usability evaluations of a prospect's site and their competitor's site. Has anyone here offered that service - currently or in the past? How do you handle this?
Since I'm targeting just one industry, I expect that after I offer this service a few times, multiple customers may ask me for usability evaluations of the same competitor. Have you encountered this situation before? Is it better to build up a library of competitive usability evaluation results and sell them as products to clients (possibly at a lower price than it took to originally do the work) or to do the work fresh every time? Or is there a different strategy that usability consultants use in doing this?