does anyone know where or who to ask to make/get white denim, good quality, zip on-able covers for two large sofas?

[ruffletheanimal]

and roughly how much good quality ones might cost?
ive done internet searching for covers made for the specific sofas in question (balzac) but no dice.
i wanna know if the price is feasible.
mercy buckets

Have you looked at these?
www.plumbs.co.uk
www.lynplan.com/Reupholstery
www.covers4you.co.uk