For some Black Friday appeared as nothing more than a con. Some angry shoppers were beginning to get wise to retailers tricks when they realised that they were actually putting prices UP but still declaring them as 'sale items.' Disgruntled Kirby Throop, from Leicestershire, tweeted Its not really a Black Friday offer when you put your discounted items back up to full price and THEN offer 20 per cent off, Asos, sorry. Guess she's right.