Just had an estimate to re-wallpaper my hall, stairwell and landing. I din't have a tiny house (4 beds) but hardly Downton Abbey. Anyway, estimate is £1200, labour only to paint and apply 15 rolls is paper.
Doesn't include stripping old paper off, that would be extra.
I'm in the north of England. Mabye I'm just being naive but was quite taken aback!