I had Waterworks come and quote on the rough-plumbing of a new shower. They provided a quote only and did not do any actual plumbing for me.
You have to make sure they are the right type of plumber for your needs, though:
Many big consumer/homeowner plumbing companies (all highly rated here at Homestars) provide premium quality and service. They can have someone at your house in an hour to do whatever you need. Premium service comes with a premium price. Waterworks is no different.
Your other option is a more traditional plumbing contractor. They may have an emergency service, but for non-emergency work it will generally take them a few days to get someone to your house. They will be significantly cheaper than ANY of the big consumer companies (not just Waterworks!)
I didn't know this when I called Waterworks. I declined to proceed with their quote, and instead hired a more traditional plumbing contractor. They soonest they could send someone was 3 days later, but I paid significantly less...they also didn't wear booties when they were walking through the house.