They have these things called farmers' markets where you can buy fresh produce and it's much cheaper than $4000. You could probably buy fresh produce for a whole year and not have it come to that total. A year's worth of food is likely more than the robot could produce in your lifetime, so the market is a much better deal.
So in your mind, economics is the only value worth considering. So I suppose that entails that you were paid to write your reply to my comment? Why else would you bother engaging on this site if you're not getting some monetary deal out of it?
When it comes to buying things, I would say yes. I could buy an expensive robot to grow a small amount of fresh food for me, or I could buy the same fresh food for much cheaper from a farmer. The former has little appeal when the latter exists.