When we talk about buying some cheap products especially during there harvest seasons, the question is always about preservation.
Still, people associate quality to price as you often don’t find the best quality cheap and this have driven the price of certain products to an insane price. It’s a sad reality but, we often play by these rules eventually.
It's true that normally cheap products are of worse quality too, but it's not always like that. Especially during harvest seasons you can buy a very good quality food for a cheap price. You just have to be careful when buying food. No need to eat food of a bad quality because you are poor. On small local markets there's almost always something similar to what you can find only in gourmet stores in Zurich only it costs 10-20 times cheaper.
If you are residing near the country side, then there is a farmers market where you can buy cheap and fresh goods, but if you are in the metro area, that is really the problem, as everything is expensive and there are times that the cheap is of bad quality, but others are also when it is too late in the night and only a few people are buying fresh foods, and others tend to lower their price so that their goods are already sold and they can go home.
It is really lucky if you have a backyard or an open area where you can make it a garden and plant foods in there because it can save you money, you can use it, it is fresh, and for sure it is safe as it is all organic and no pesticide was sprayed on it.