It’s a very long time since I studied economics. One of its cornerstones is the law of supply and demand. Simply put, it states that as demand increases the price does likewise. This then encourages new market entrants which increase supply, bringing the price back to where it started. In macroeconomic terms, this works pretty well. In the tiny world of retail that I occupy, this law doesn’t apply. So often, I have my enquiries rebuffed by slovenly sales staff with “No, there’s no demand for them.” or the one that really boils my ageing blood “No, there’s no demand for them any more.”. If I were looking for something like a set of E-180 cassettes or a pair of long johns with a trapdoor, I might not find this so upsetting. But, when I’m looking for lamb ribs in a butcher’s shop, I get pretty irate. “We used to sell them but it’s only the Chinese who eat them now.” was what the spotty youth in fancy dress said to me.