How much is my Ford Mondeo worth?

I gave my car to a local garage to have substantial repairs done. The repairs were largely completed and the owner of the garage was giving it a last test drive in person after running the car on a ramp....

Can a dealer increase the advertised price of a used car?

We went to see a car at a garage priced at £7900. I arranged a test drive, only to find the dealer has increased the sale price to £8500. I have a photo of the car with the original price from six days...