What is the going rate to fit a kitchen mixer tap?

[NannyR]

Does anyone know roughly how much you would pay a plumber to fit a new kitchen mixer tap?

I have a friend from church who has offered to fit one for me, he is a trained plumber but out of work. I want to pay him the going rate for doing it but if I ask him, he will say I don't need to pay anything.
I just wanted to get a rough idea of how much it would cost so I wasn't giving him too little or too much.
Thanks.

My MIL had a bath tap fitted last week it cost her £70 I understand it’s not the same as a bath tap but I think the cost would be similar,

I paid £90 last year for someone to change my kitchen mixer tap.

We just got a new one fitted 3 weeks ago, from two separate taps to a mixer. And two outdoor taps, was 80 quid all in. Dunno if our plumbers just really cheap right enough.

Slightly different, but £80 to replace two taps in last year, including assessment of problem and travel to collect new taps