Mazda = Ford.Mazda is expensive as there's not so many of them on the roads so they dont have the spurious parts...
Ford and Toyota are best value on parts, but with a well minded toyota you won't need any parts! In any case stick with the Japs.
How about importing a 03/04/05 Corolla from UK/NI?
For best value now you need to be going to a car dealer with CASH.