Further to our discussion just now, I confirm that we have the following in stock so can deliver in a few days.
The links above show the prices – currently at last season but they are likely to be going up in the next week or so for the new season.
In terms of the bases, attached is an image of the galvinised 46 kg flush base that we have (799 x 15mm). It is one of few we have found that actually lasts and works well but it is functional rather than “designed”. The cost is net £270 per base. Delivery of the base is net £35. If you had a 2.8m square you would need 2 of the bases bolted together so that would double the price!
As an alternative, there is the granite stone base of which you were unsure of the colour. However, the 40kg which goes with the 2.2m has wheels to help with mobility and it is a better shape to mirror the shape of the parasol. These are priced in the links above.
I will wait to hear from you.