After reading the title of your thread I was thinking that why someone would use Non Profit and Paid at the same time then I found that someone might use those words to attract users.
But, when I read your thread then I found that you're someone who isn't owner of a pool or has huge amount of hash power to accelerate the transactions. I think you should remove that "Non Profit" from the title and continue doing your service.
It's in fact a paid service but you might not be charging much for it. I think nothing is wrong in running a service like this as long as you can spend your time to accelerate others transactions by any means.
Thanks for the constructive input, I have changed the title to low cost paid transaction acceleration service.
I have found most accelerations range from $38 - $40USD depending on their size/weight/outputs/UTXO's and current fee rate
If this is what accelerating transaction would cost, I would rather use RBF enabled wallet like Blue wallet and increase fee myself and get it confirmed. I have paid max $7 fee, even during recent congestion times, and got it confirmed within a day, to pay $40 USD for accelerating transaction is insanity.
Absolutely I agree with using RBF if it is a self transfer that you initiated from a wallet with keys you control.
My service is more oriented to the people who have stuck transactions that were sent with a low fee from a custodial service for which the recipient doesn't control the wallet and therefore can't RBF.
ie.. Cashapp for example.