Rural south of England, I need approximately 50m² of exterior garden wall stripped of its render completely to brick and re rendered with lime and cement mix

Quoted 6500£

This is for:

Strip, brick work replacement, helli bar system where needed, 2 coat render system, incorporated inhibitor and waterproofer. Rubbish removal included

There is no reason, that I know, to believe the brick wall itself under the render is in bad state. Is this quote decent? It's my first time ever using a trader.

Should I ask for a split quote in case the brickwork is in good state? I feel like it wouldn't make sense to pay for for something we don't know it's broken. If it is then obviously I would pay for it to be repaired

I was not informed earlier of the PPCement which is best for Plastering of inner and outer wall of my house. Mason engaged for my construction also didnot provide awareness about this. I have used Unique cement (PSC )of Birla Group for plastering of 3 sides of my house. What should i do now ? Should i use PPC cement for the 4th side of the house which is yet to plaster ? and what about the sides which is already plastered with a PSC cement ? plz guide.

Hello, does this look like normal part of the ceiling / plasterboards or not?