HI, everyone: I just ordered aurion touring two days ago, and dealers ask me to buy the PAINT protection & Glaze Guard. It is so expensive, but dealer tell me it is worthy to pay for it. I used to live in Taiwan before, so I don't know wether the sun of Austalia will damage the car paint or no. Does PAINT protection & Glaze Guard really work or just trickery? Should I buy this ? Thx!