The % is currently 1.69%, but not sure how it would work in terms of "bucket collection" but might depend on location.
If it was a specific crowd at an event and they were to make a donation, that could work.
I use it for Alumni events both to pay at the door, buy raffle tickets and also to book online in the customised shop you can set up.
I also another one for a Toastmasters club and it's used both for membership and also (when they start again) the nominal fee for tea and coffee at physical meetings.
It has moved leaps and bounds in the last few months and I think it is far better than PayPal for such situations