In the UK shops must sell things that are at the advertised price. Thats how it works. If the fish was in the wrong tank at that price it must be sold at that price.
I'm sorry but you are completely wrong. Why don't you try looking at consumer information sites on this. The main consumer information site is Which?. This body will tell you that any mis-priced item as a result of a mistake does not have to be sold at that price as the seller has a right to refuse to sell. I recommend you check
the Which? website before again stating your incorrect belief that an advertised price is binding. In case you don't want to go to that site, I have quoted the most important parts here:
If prices are advertised incorrectly
It is against the law for a trader to deliberately give misleading or wrong prices, and they can be prosecuted for doing this.
However, if the price of a product is simply wrongly labelled you don't automatically get to buy it for that price. For example, if a TV worth £599 has accidentally been labelled as £5.99 you don't, unfortunately, have a right to buy it for £5.99.
A retailer's right to refuse to sell
When a retailer displays a product for sale, legally it is giving you 'an invitation to treat', which means it is inviting you to make an offer to buy. The retailer can refuse that offer if it decides that it doesn't want to sell you the goods. To have a legally-binding contract the retailer must have accepted your offer to buy. So your rights depend on where in the sale process you are.
Before you pay
If you take a wrongly-priced item to the till and the assistant spots it, they can refuse to sell it to you for that price.
Ok...
The bike comparison, this was from personal experience, tescos often sell items off that are discontinued at the lowest price they can whilst still making a profit on them. One such incident was a pogo stick I bought for my daughter which I purchased at £1.50, knocked down from £25.99, they still make a profit on this so you have to wonder how much they got it for initially.
How do you know they make a profit and are not just getting a small amount of money for something they would be just dumping to make room for more profitable items. The fact the item is being discontinued would imply the company did not make the sort of profits it had hoped to.
Supermarkets are actually very prepared to sell items at a loss to get people in and shopping, there is specific legislation to ban stores from selling essentials (bread, milk, eggs etc) as "loss leaders".
The pc world example, ok 10 times might have been a slight exaggeration
but they do charge ridiculous amounts for the items. I can get you some prices to compare but for example, the pc I built cost me £400 which included the tft monitor, mouse, everything, the same pc(which you couldn't get with my cool case
) would cost double that from pc world or similar.
However you knew what moniitors to get, what mouse, what motherboard, how much RAM. PC World provides a service in that someone doesn't really need to know what they are doing, but can just buy a PC. I can probably tile my floor for less than a professional tiler will cost, that does not mean I think he is making a huge profit, but offering a service to those that do not want to learn how to tile just to get a nice floor. You are confusing making something yourself with a business that has to make profit or else it folds. I am willing to bet you did not allocate any time costs to the price of you building the PC.
I should have made myself more clear about the fact I meant including all the usual overheads, 'shrinkage', wages etc.
I still don't think that PC World make a 100% net profit on any PC they sell. If they could do that then someone would move straight in and undercut them.
Small shops don't make much profit but I don't believe that the large chain stores don't, as they wouldn't be so large or their investors so rich
And that is economy of scale. as the stores get bigger they sell more and can order more. The profit margin in a large store is almost always less than a small store (hence why the smaller stores seem to charge more). It is only because there are so many sales going through a large store that they make more money on smaller profit margins
Back to the point though, I think it's perfectly acceptable for both the customer and the shop to take advantage in either situation. I would do it, it's a dog eat dog world and you have to be on the ball or get taken advantage of. That's just my thoughts on it though
And that is why we have consumer protection legislation. Otherwise the most vulnerable will be caught out. I assume from your statement you would be all for massively overcharging someone that you knew to be below average in maths, never mind the fact they have a small amount of money to live on?
I have a feeling this could go in circles
Indeed it will as some people will empathise and realise they do not want to be the victim of such a situation, while others will spend more time considering how it is to be the victor.