Ok I see your point about private and dealer prices, but I found examples in carzone of dealers (not Toyota) selling 1 to 2k cheaper than 12k.
But to be honest if I was looking for a second hand small engined car would be very interested in low mileage 2 or 3 year old , 1 lady owner, yaris because. 9 times out of 10 that car has been looked after, driven carefully, you can talk directly to the previous owner, not to a salesman who would probably sell his/her own mother! and if I save 2 or 3k on the dealer price, it will pay for any small maintenance cost that might happen in 1 year. Ok maybe not an engine failure or something big like that!
plus if I saw a 3 year old yaris or any car in a dealer the first thing in my mind is why has this car been traded in only after 3 years? why didn't he/she try to sell it privately?
its a bit paranoid I know, but I would still think it!
Getting back to the thread, if this deal is genuine, i.e. no hidden charges, penalties.
And you want the security of a warranty, then it’s worth a look.
But always remember not to pay over the odds for the car in the first place.
take their 50, 50 deal, but don't let this stop you from haggling also!