I'm suppressed it's not been mentioned yet but the cost to buy and import has risen substantially compared to 4 odd years ago. That will push the prices up and that's not down to people in the UK
Also I just recently bought a TT 6speed for top, but what I believed to be a fair amount of money (about 5k on top of any of my previous supras and one was a single 6speed) because that's the price of them now. For a good one anyways.
To the OP the price isn't as justifiable to me personally, as like others have said I remember when in general auto N/As were very cheap and things like a 6speed box are important to me. That doesn't however mean it's not worth the 7k. Many people love the auto, some people will love the rarity of the aero and colour, others will see a great project car etc.... so it may be worth 7k to them.
People bashing the prices probably don't currently own a Supra and can't afford/justify the prices now so have to have a go at rising prices. Equally though some people are just trying to push prices up with all the "it's too cheap" crap, every time someone lists one to sell. There's a fine balance, but if you can't import one for less then the price must be pretty accurate.