Suggest you talk directly with the fitter or course where you are having it done. Normally now, the fee can be directly applied to the same-day purchase of a club(s) you are trying at the fitting. High-end fittings at places like the TPI do not apply their fees and some courses may have a fitter that has waived the initial deposit for fittings. Best check before you go to fully understand what your options are in your specific fitting. Fittings are so very important to ensuring you are playing equipment best suited to you. Good luck and hope you are pleased with the final outcome as much as most all of us that have had it done.

I agree with Dale. I would inquire. I had mine done at the PGA SS Studio and incorrectly assumed that the $99 fitting fee would be applied to the cost of the clubs.

If you found the fitting from the Fitting tab on this web page, the $100 fee is applied to the clubs you were fitted for. In all likelihood. That was part of the disclaimers on the web page that took my money. Won’t hurt to recheck with the location if you don’t remember that disclosure.
All other fittings negotiated locally are not guaranteed by the same disclaimers. Best to clarify what the fee includes and if any is applied to the purchase.
Once fitted, there are reports that some wanted to buy $100 or more of other equipment and not buy the fitted clubs. That’s not how it was set up. Titleist covers the fitter so the expectation is to promote sales and discourage tire kickers or those buying through other channels. The sponsoring site should have some benefit for making the location available.

I did my fitting through Titleist at a local club ($100) and it was refunded back into the purchase of clubs.

I also inquired about a shaft fitting at PGA superstore and they said all fittings are $100 and are not applied to fittings. Sometimes cool clubs or hot stix or club champion will run full bag fitting promotions but they never apply the fitting cost to purchases.