Off to find another plugin where the developer is less arogant.
We have managed to fix the javascript conflict and can now add wholesale prices in the backend – these show perfectly in the backend – I have assigned a user as a Wholesale Customer, logged into the site frontend and viewed a product which I know a wholesale price was applied too – and nothing still shows the retail price.
OK, I’ve tracked it down to the WPBakery Visual Composer plugin – disabled it and I can edit the Wholesale prices – not ideal having to do these edits at strange hours of the night though – is there anything I can do to fix this?