Short Answer: No. You get what you pay for.
Long Answer: Quotes from Patent Attorneys are generally based on how much TIME (among other factors) they have to spend drafting, preparing, and filing your application. For example, some Patent Attorney’s or Patent Agent’s may quote you a low up-front fee to prepare and file your application. However, they will limit your application write-up or drawings to a certain number of pages or claims. For example, they may only draft up to 10 pages of specification or 3 claims. This could potentially be fatal to your patent application down the road if not all variations of your invention were disclosed at the time of filing, there’s not enough support in your specification for proper claim amendments, and the list goes on. So you may save a few hundred or thousand dollars in the beginning, but you may regret that decision down the road when it comes to prosecuting your application at the U.S. Patent Office or enforcing an issued patent. As a patent attorney here in Dallas, we do not put a limit on how much we write for our clients to ensure that we have encompassed and captured your invention in properly drafted patent application. Again, you get what you pay for.