Below that, lots of haggling and informal trade often help people get by. The costs of that process can be another burden on the poor. At the high end, it's worth involving people with discretion on the sell side. Additionally, sales are often one-off and customized. They may also bundle a bunch of different items and benefits without clear line-item breakdowns.
When hiring a lawyer, I'd nearly always recommend getting terms down in a written and signed engagement letter before work starts. That is very much a negotiation, but it's fine to ask questions and comparison shop.
If you're starting with a call, it's perfectly normal to start by asking whether initial consultation will be billed or not. If it will be, ask the rate. If it won't be, expect some limits on what can be discussed. The best lawyers I know aren't cheap or easily tricked into giving free advice on consultation calls with speedrunners, but they are up-front about what they charge for and how.
Disclosure: Am lawyer. Negotiate professionally.