OK
having read t'interweb...

Supagard ..

Organic.... is organic
Special .... Those who lick windows are "special"
Unique ..... It's green liquid, the others are different colour

Once applied, it's there to stay for at least 3 years and that's our Guarantee!..... Why is there a shop full of acid neutralising, shine enhancing, water beading, miracle liquids for sale?

Seriously, is Supagard worth £399, or simply, (as I suspect) complete cack.

I won't ask or it taking off the order, not much point, I tell my sales guys, take off freebies by all means, tell the customer the price is the same, it was free, how can we take it off! I know, I know.

Getting back on topic, what does a fat old aged fart use to keep his tool gleaming

I recently bought a few months old Silver SD XS. The guy at the dealers I bought it from said there was a glaze treatment applied but he did not know if it was Supagard, Lifeshine or Diamondbrite. I raised this in another thread here to ask what I should do to maintain the shine but there was no definitive answer. So, what I then did was to "ask the expert" on the Autoglym website. Their response, to use SRP and then wax with HD