Our regular favourite Gostude is at it again:
http://www.ebay.co.uk/itm/Hornby-R297-MANCHESTER-CLASS-142-PTE-PACER-DMU-LOCO-No-55554-with-DCC-FITTED-mv-/221081062643?pt=UK_Trains_Railway_Models&hash=item3379754cf3
http://www.ebay.co.uk/itm/LIMA-5052-BR-SUPER-SPRINTER-CLASS-156-DMU-SET-with-Hornby-R8249-DCC-FITTED-m-/370674279586?pt=UK_Trains_Railway_Models&hash=item564de8a4a2
I didn't think fitting a DCC chip doubled the value!