Technically it its is a genetic sensitivity to testosterone, it is not proportional to testosterone levels. Otherwise all those steroidal bodybuilding women would be bald.
To be fair Tesco's are brilliant for errors in their pricing, just keep an eye on hotukdeals and you get stuff scanning at self service for 1p. I got a load of maryland gooey cookies at 11p per pack a while back.
I just a very similar Lenovo to yours ex-displsy in eBay for £245, very happy but was wondering how much battery time yours gets? At 99% it's saying will last 4 hours 20 mins but in reality it seems nearer 3 hours...
How about something off of this thread:
http://www.hotukdeals.com/deals/refurbished-lenovo-i5-laptops-x201-t410-x220-t420-from-only-149-98-3000rpm-com-1993639