Fair price from contractor?

[carpozijr]

We are looking to have the following work done:

New slabs on steps and platform at front door.
New slabs from door to pavement. 16sq m inc steps (above).
Creation of patio approx 14 sq m.
Removal of some old bedding walls, approx 20 sq m.
Laying of aggregate approx 90 sqm.

We have been quoted £1200 for the above, but with the new slabs and aggregate being laid over the old grey concrete slabs.

Or, we have been quoted £1600 to do the same, but to remove all of the old concrete slabs first.

This is labour only - this does not cover slabs, aggregate, sand, cement, skip hire, membrane (for under the aggregate to stop weeds).

Are these prices fair? Any advice/comments would be very much appreciated.

Thank you.

[lutonlagerlout]

both prices seem fair to me,a little cheap if anything.
be careful not to have any flags laid higher than 150 mm below DPC
cheers LLL