I need to create a button that will actually finish a purchase process. Like "Buy Now" , or "Create Membership", or simply "Submit" (eeeew!)

Now, my problem is that in this process you won't actually buy a product. Instead, a professional will visit the user. This professional will also bring (or not) a set of tools, with a price difference. User chooses whether to tell the professional to bring these tools or provide them on their own.

Of course, I already thought of the classic options for this kind of scenarios like "make appointment" or "hire service" or similar, but I don't feel they're correct, because you're not making an appointment and you're not only hiring a service, but you MIGHT be actually purchasing the set of tools (tests provided by clients show this will happen in around 70% of cases)

In short

How can I label this purchase button in a more accurate way?