Expensive property in Cornish towns

This table uses Vue with a Vuetify component.

Note: The data under the "Most expensive property" column is a basic integer. For minimal usability this needs to be a currency integer with a comma denoting thousands. In this case it would be a £.

Not figured out a way to manipulate the number without turning it into a string. It needs to be a number to allow proper sorting. I am nearly there though.