Doubtful, because GP has to pay the subscription fees for all the LLMs he's employing. I know ChatGPT pro for deep research is $200/month, Gemini deep research is (I think) $20/month for now, Claude pro is $20/month. Cheap compared to lawyer rates but I doubt they'll stay cheap.

LexisNexis rates vary quite a lot but $200/month for a small law firm is in the ballpark.