Two different definitions of a lead
In a client workflow system, a lead is a person with a name, an email and an intent to buy something you have described. That is a fair model for a business selling a defined service to one decision maker. Speaking does not work that way. The person emailing you is often a program chair reporting to a committee, a chapter volunteer, or a learning and development manager who has to sell you internally to a budget holder she has not met yet.
That is why the front of a speaking funnel needs a public artifact rather than a private document. Your page gets forwarded, opened by four people, screenshotted into an internal slide, and pulled up again in a committee call you are not on. A proposal built for one recipient cannot do that job, and a document that expires or requires a login definitely cannot.
Where the handoff between the two should sit
The clean line is the hold. Everything up to a date being penciled belongs on the page: topics, fee bands, travel radius, the calendar and the inquiry record. Once a planner asks for a contract, you are into scope, deposit terms, recording rights, cancellation windows and the travel reimbursement schedule, and that belongs in whatever system you already use for agreements and payments.
Keeping that line sharp stops the duplicate data problem. Your fee bands live in one place and your signed terms live in another, and neither needs to know about the other. When a corporate buyer asks for a W-9 and a certificate of insurance, that request goes to your paperwork system, not to the page a committee is reading.
What it costs to run both
SpeakerOneSheet runs from nineteen dollars a month on Solo Speaker, forty nine on Speaker Pro when you want deeper inquiry tracking and multiple topic sets, and one hundred nineteen on Speaker Team when a partner, a booker or an assistant works the pipeline with you. That is a small line next to a single travel day.
The question is not really the money, it is attention. Two systems only work when each has an obvious job. If you find yourself pasting fee bands into a proposal template every week, tighten the page so the band arrives with the inquiry instead. If you find yourself chasing signatures from the page, you have pushed it past where it belongs.