[michaelt]

Smallest transaction I've seen is 191 bytes; [1] says right now to get a transaction in the next block the minimum fee is 240 satoshis/byte; and that today the 251-260 satoshis/byte has been the most common fee.

That's $2.82 according to [2].

And that's with current levels of demand - if there was a transaction every time someone visited a website, demand would be much, much higher.

[1] https://bitcoinfees.earn.com/ [2] https://www.google.co.uk/search?q=(191*240%2F100000000)+BTC+...

[freeloop3]

Yes, you're right. I miscalculated the fee. I actually paid $1 and was not trying to get it in the next block.