Here's a pretty good dissection of how Chris Do, the owner of a pro design agency prices a logo.
https://youtu.be/RKXZ7t_RiOE
Worth watching the whole thing, but feel free to start at
https://youtu.be/RKXZ7t_RiOE?t=168
I point this out because the Chris Do references the Nike logo specifically. He says that the Nike logo is worth "billions", and then Chris Do goes on to use the Nike logo as an example of "pricing the client" rather than the job.
Fundamentally I agree with this approach.
Except in the case of a logo created for a 1971 era Nike. You see the designer, Carolyn Davidson, was paid $35 in 1971 ($221 in 2020 dollars) for the Nike logo.
That's it. Full stop. Nike owned the Swoosh logo mark for $35.
See, here's the thing about pricing logos that I've never heard anyone actively address. Because, in 1971 the Nike logo was only worth $35 to Phil Knight.
Nike was being run out of the back of his car as he sold shoes one pair at a time at track events. The whole business could have been dead the following month, or a couple months, or even just a few years later. The chances that Knight had the budget to pay what the mark was worth at the time (much less the potential value of the logo 15, 20 or even 50 years later) are incredibly slim.
Now, it's well known that more than a decade later in 1983 Phil Knight and Nike did compensate Carolyn Davidson with a surprise gift of Nike stock which has since become worth hundreds of thousands of dollars (arguably a STEAL given that the logo is now worth billions) but that was not out of any business savvy of the designer. It is just as possible that the Nike logo would have only ever generated her $35. I wouldn't want that. I can't imagine any of you would want that. I doubt very seriously the original designer of the Nike swoosh Carolyn Davidson wanted that.
https://www.oregonlive.com/business/2011/06/nikes_swoosh_brand_logo_hits_4.html
But if you follow Chris Do's advice in this video to the letter that's what would have happened.
So here's what I suggest to anyone doing logos for small start-up companies with budgets that don't (or simply can't yet) compensate you for your time, talent, and effort.
LICENSE your logo.
Do. Not. Sell. It. (that is, don't create the logo as Work For Hire. Don't transfer your copyright to the client)
Explain the the client that this logo has significant potential value (and believe me, your client will already know this) and that if you charged accordingly it is likely to be outside the client's current budget. Instead offer to license the logo ( I'd personally specify an "exclusive unlimited use") BUT for a limited amount of time. The lower the budget the shorter the license time.
If the business is successful the client can always come back and relicense for a few more years.
Eventually, if the business is successful enough (as we saw in the case of Nike) they will come back for a "full buyout" at which time you can negotiate a fee that is commensurate with what the logo is actually worth.