there is a free service from a different pool...
I've used it a few times for purchase related transactions, but it's gotten popular enough that sometimes you have to try a few times over an extended period (as they only take so many per hour).
right now the netwok is congested. i usually wait until it is not, then send with about 20 sat/byte. Only one time i had to repeat it.
It is bizarre that software demands 240 sat/byte, but accepts 20 sat/byte. Something is screwy with 21co calculators.
yeah it is. and while I love hitting 14 and 15 coin blocks something has to give.