How do I bathroom / kitchen / extension? etc.

Anyway... Radiators.

We want a new one for when we knock out part our kitchen/dining room wall.

Was looking at this:
https://www.bestheating.com/milano-skye-anthracite-aluminium-vertical-designer-radiator-various-sizes-92489
as we will have available wall space of 1100mm x ~2000mm.

A few questions I guess.

1. Is £500 about what nice looking big vertical radiators cost?
   
2. Are they all much or a muchness brandwise? Any recommendations for where to buy?
   
3. We'd want it colour matched. I guess we buy it. Paint it. Then get a plumber round, right?
   
   

Cheers