- soft boiled eggs in a convenience store. It's a simple thing, but kinda mind-blowing. It's easy, cheap, healthy, perfectly boiled every time, could be found in any convenience store and is a great low-calorie snack. One could argue that this thing is not that cheap (~2,000w) compared to a carton of 30 fresh eggs (~3,000-6,000w), but just the fact that it's possible to buy boiled eggs in a store and eat them on the go, just boggles the mind. Why don't we have this at home?