There are lots of issues here
I think it's fair enough to be concerned if people have a hygeine certificate, or are registered with the council for preparing food (although unlike lots of MN, I would buy a cake at a school fayre, or try cakes that colleagues bring in)
And I admit some things do not look great - either because they have mixed sweet and savoury, or hot and cold, or they are not conducive or practical to travel or be delivered.
But I cant get worked up about the sweet boxes though. Yes it's not healthy to eat a ton of sweets in one go, but once you've bought the item, you are free to eat as many or as few as you want at a time. They can surely be stored for another time? It's not healthy to eat 5 or 6 chocolate bars in one go but lots of people buy Cadbury selection boxes at xmas....Or you could say a toblerone is outrageous because it's not healthy to eat a whole one in one sitting.
And lots of posts are just a bit snooty about the concept of the items. Not your thing? Scroll past!
And if people can see (and know) what they are buying at an agreed price, then how are they being ripped off? A lot will look and say it's not worth it I will buy my own sweets/cakes/make a cream tea etc, others will pay for the presentation or convenience if someone else doing it.
Easter eggs are a complete rip off - an egg that weighs less than a chocolate bar is sold for 4 or 5 x the price but most people are prepared to still buy them!