Should I buy extras like shine protection, GAP protection etc for our used car?

My wife is buying a used car from a franchised dealer and, as expected, the sales pitch for various extras was employed. Life shine car protection: £350. Gap protection insurance: £399. Another insurance: £499. Total £1198, or a ‘car pack’ to include all three: £995. What is your opinion on extras such as these in general? I know a few years ago you recommended a car body protector but cannot remember what it was.

Asked on 24 August 2013 by PS, Ipswich

Answered by Honest John
200 per cent salesman's commission here. Autoglym Lifeshine is an excellent buy at £150-£200. £350 is too much. GAP insurance can usually be purchased from a broker for £100 - £150.
Similar questions
I am in the process of buying a 2007 Honda CR-V 2.2I -CDTI ES and am being offered GardX Protection for £299 for 8 years and Honda Gap Insurance for £299 for three years. On the face of it, both appear...
I am about to buy a used 2008 Audi A6 Saloon SE Special Edition from a local Audi dealer, who is suggesting that I should have the Autoglym Paint and Exterior Protection. I know that they are charging...
I've just bought a new Hyundai i10 Active auto for £8527. But the salesman wanted me to pay an extra £395 for glass coat paint protection and interior Scotchguard protection and also £395 guaranteed asset...

Value my car