What was your original budget for the work? Where was their bid in relation to the competition? In rereading your post I assume you only have the one bid and got a little sticker shock.
To give you a little window into proposals from an engineering firm, my company's process is the following:
- review project with client
- clarify requirements
- agree upon a scope of work
- prepare price based on the different personnel required (from $50 to $200/hr depending on the personnel), the number of hours needed with factors for less than 100% efficiency + travel, any tools or consumables, and finally a factor based upon the client and industry
- provide proposal including all of the information above
As a tip for negotiating, speak up if you don't feel you are getting your money's worth. Just be prepared for the reasons that come back. As you can see from the process listed above, the largest cost factor could be due to your attitude / understanding of the scope / wanting to look over their shoulder / time needed to educate you / etc.
You must understand as a client that part of the price is dependent on you and whether you work together as a team for a common goal or bicker over items / time / costs. If you are clear, upfront, and helpful your cost may come down......or you may have asked for more work than you really needed.
ZCP