Harvesting in the vegetable garden: too much or just enough?

Too much harvest at the same time
People with a vegetable garden often boast about the enormous yield of their vegetable garden. Kilos of beans and beets. But it's a lot of work to pick, clean, and freeze all those vegetables. While at the same time, these vegetables are for sale for next to nothing in the stores.
And be honest: how many heads of lettuce can you eat in one week? Not twenty, right? So half of them are already blossoming before you harvest them:

Harvesting in the Planty Garden
As soon as I harvest a patch empty, I immediately sow or plant a new vegetable in it. Sometimes, one 30 by 30 cm patch is planted three or four times per season. This way, I spread the harvest over the whole year.

We continue to do so until the lettuce burst into bloom and is no longer tasty. This way, we stretch the harvest.
The produce of one box
- 4 bok choi
- 4 heads of bibb lettuce
- 4 heads of cos lettuce
- 4 heads of lettuce
- 9 bunches of lamb's lettuce
- 1.5 kilo sugar snaps
- 1 kilo of tomatoes
- 8 bunches of chard
- 9 bunches of spinach
- 16 carrots
- 9 beets
- 32 radishes
- 16 onions
- 4 bunches of parsley
- 4 bunches of chives
But against the yield of a vegetable garden are the costs. So let's look at that too: