You can easily tell that your business isn't working out if you're asking this question, sorry if that's a little harsh. Its better to focus on increasing revenue than to focus on cutting cost, since you can always come back on cost & scale helps even more.
i bill around $400 per hour. so 15 min is $100. let’s say this happens a few times per week so that is about $1000 per month. if we are talking about product sales it could be 10s of thousands of $.
You kind of have the logic in your own post, $100 > $15.
Wire Transfer 101 https://youtu.be/RXV-URLCMgA?si=JR7u6LgV9d308XWc
Congrats on crushing it so hard that you need to offload moving all that cash around.
The only solution I come up with is to become a shitty executor yourself.
Just stop caring about anything that much. You don't have to be perfect to be successfull.
Take inspiration from those brilliant 10x developers ruining google search quality, whatever...