If the dealer imported it, he will have an auction sheet ! Either way, he should have a copy !
it is advisable to see the auction sheet. Mileage, options, condition, damage, scratches, etc., etc.,
It has loads of detail.
Car dealers are in it to make money, and they have to charge VAT, which hikes the price. But.....
Some are better than others.
My advice ?
Don't hurry. Read the positive dealer (indirect) reviews in the Forum and shop around.
You will probably need to locate someone, or a company, to work on it (when required); unless you are mechanically inclined.
Many official Toyota dealers will not work on grey imports, but some will.
Good hunting.