name='autolycus']Er yes - there's cheap and there's ridiculous. I'm guessing the market value would have been around the 500 quid mark, but i'm not about to spend time researching it myself, so i'll admit i could be wrong.
Interesting about the "heads up". I noticed that, and I had thought it was a recent addition. But i was watching "Law and Order", made in 1978, the other day and the phrase features more than once in that. More in the sense of "watch out" admittedly.
But, I do hope i heard incorrectly when i thought i heard the young detective say "you do the math".