Coming home from work the other day I saw a poster on the Tube which grabbed my attention. Leaving out the unnecessary details, it said

“Buy a ……, get a free …… worth £49!”

Is it really? Value, like beauty, is in the eye of the beholder. The company may choose to sell the gadget for £49 normally, but that certainly does not mean it is worth £49 to me. In fact, it almost certainly isn’t – it might be worth more, in which case even if I had to pay for it I would think I was getting a good deal (and I may well have already bought one anyway), or it is worth less, in which case I’d never buy one normally, but might be tempted to get one for nothing. It is pretty unlikely that they have hit on exactly the right value for me.

Our entire economic system is based on the idea that things have different values to different people. That is how trade works – if it were not like that, it would be impossible to make a profit on trading, so there would be no incentive to do so. I buy something because it is worth more to me to have the thing than the money. The seller sells it because they value having the money more than the thing. It may be in the trader’s interests to confuse value with price, but in the end we all make our own judgements about what something is worth to us.