What does a hot flash feel like?
People describe this in their own words, and the descriptions do not all match. That matters for cost, because the way you describe it is part of what a clinician hears before recommending anything.
Describe it in your own words
There is no single definition to offer. Descriptions differ from person to person, so the useful step is to write down your own: what you notice, when it starts, how long it lasts and what was happening just before. That note costs nothing, and it gives a clinician specifics to work from.
Published descriptions to read next to your notes
Several published pages describe hot flashes in general terms. The Menopause Society's page on hot flashes is written for patients, and the Cleveland Clinic's article on triggers, duration and treatments covers similar ground. A page from the FDA, Menopause: Medicines to Help You, is about medicines, and the NCCIH page Black Cohosh: Usefulness and Safety is about one product. Treat them as background reading.
Pricing the visit once you have your notes
If you decide to see someone, bring your notes and ask how the visit is billed before you go. Ask what the fee covers, whether a follow-up is included, and whether paying per visit or joining a membership suits the number of visits you expect. Put the same questions to each practice you consider.
Why a clear description is not an assessment
A clear description helps a clinician and helps you compare quotes. What your own hot flashes mean is for a licensed clinician to assess in person.