£6k will buy you a high mile, low spec D3.
Was offered 2 last week. An 06/56 plate "S" with 85k miles, but used off road, as a farm hack for 2 years. No MOT, and various warnings on the dash - £5500
And an 06/06 "S" with 207k miles, needing an EPB module for £4k.
Need to have deep pockets, or be handy with the tools to keep a D3 going cheaply though