Depending on the colour/size facia boards around £30 per 5m (L5m x D150mm x W9mm) expect to pay a bit more for 12mm thick.
Guttering depending colour/shape about £10 per 4mtr length (square)
Down spout about about about £11 4m lenth (square)
Connections about a fiver each.
These are the prices I paid couple months ago from my local plastics centre, to do groundfloor, which I did with help of a neighbour
I had upstairs redone spring last year (save painting) by someone recommended. I think it cost around £400ish
Its worth pricing the bits up yourself, at least that way you will get an idea of labour costs and whether they are ripping you off or not!