Unmetered 40/20 with a static IP address can be got for under £18 (including VAT) a month here in the UK. That is on top of the line rental, which is something like £15 a month.

80/20 can be had for a couple of £ more.

That is with FTTC, using BT's network. Sadly my two FTTC lines top out at 23/3 and 18/2, the downside of living somewhere nice and rural...
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Remind me to change my signature to something more interesting someday