Egg and bacon / egg and sausage were like $2 when I was there in the 90s. And they were about twice the diameter of the ones you get at McDonalds. I don't know what it costs now, maybe this is something like avocado toast that's become anomalously expensive, but calorie for calorie it was as cheap or cheaper than pizza back then. They could be bought from most bodegas that had a stove, as the peer points out. (The LA equivalent of this type of bodega was the "roach coach" - distinguished from modern food trucks by (a) an apparent lack of formal licensing, (b) presence of construction workers eating there, and (c) charging about 30% the price for the same items. The breakfast burrito, however, had not yet migrated to the East Coast).