Construct Payments: The Magic of Numbers

I understand the reasons for the price increase: inflation, and changes in pricing policy.

But I'm getting old and somehow forgot how the number on the bottom left (51.49) turns into the one on the right (73.99) with one click.

I looked through my account tabs and didn't understand much. I'd be grateful if someone could remind me.

On the Construct.net webpage, what country is it showing you as from in the bottom left?

And on the billing page, what country is your billing address?

Thanks, Tom, that helped.

These things always slip my mind.