I am afraid to say that using an attorney in a dissolution of marriage action is never going to be “cheap”. But there are some things to be aware of when looking for an attorney. A low “flat fee” or low initial retainer does NOT mean that attorney is going to be a lot cheaper. It means part of that attorney’s marketing approach is getting you in the door and signed up. So, be sure to ask what they see the typical costs running.
Also, a lawyer who instantly agrees with your position and seems to get fired up about it may cost more in the long rung. Lawyers in family law typically charge by the hour and so the more litigation that occurs the more they make. A lawyer that quickly is incited to emotional reactions (feigned or real) is a red flag that they will pursue more litigation instead of seeking resolution. Perhaps that is what you hope for, but be ready to pay for it.