i can't see the pics, but if you've got an escos then, unless you are minted or hae soemthng else to drive about it and keep the cos esc tucked away on a windy night, i'd stick with the escos, at least you know what's been done to it and where it's been

the garae seem to have had their pants pulled over this one if they've swapped it for £15k, so you also have to ask why they want another £k for selling it on to you