You could say the same thing about the U.S. I hear people complaining about prices at Whole Foods, farmer’s markets, or organic produce. They only want to pay the price you get for vegetable in the supermarket. But that price is subsidized by illegal immigrant labor. If you want your vegetable that cheap, then you are willing to have illegals. (Also we have plenty from Mexico and China)
Immigration is some of it, but a larger part is what I call the big industrial size farms. They produce food by the truckload. I have literally driven a rig into a lettuce field, a tomato field, a potato field, etc., and picked up produce. Most of those places are harvested by machine now. I would be one of hundreds of Tractor Trailers in one field.
Mom and Pop farms, and Organic Farms have to charge more based on volume, use of land, seasonal issues, etc, but on the other hand the produce is usually better.
As with most things, you get what you pay for.