I found a 24 gallon AIO with everything (pumps, skimmer, ATO, rocks, thermometer, wave makers, filter floss, 5 gallon containers for mixing, salt, dosing supplies, reef food, fish food, coral dip, Red Sea test kits, turkey basters, and stand and probably more I’m forgetting for $200. It was used 6 months (guy found it too labor intensive and went back to freshies.) got a noopsyche K7 mini while on sale. Came in at just under $300.Well, what does "budget" mean? Yes, you probably can't get a nano tank under $300, but "budget" could mean very different price ranges dependent on the person. IMO, people going to put animals under their care, should not be "on a budget." Yes, you could do it cheaper than the normal tank, but anyone caring for animals IMO has to be willing to provide the proper care, which in most cases means buying things that are more expensive. I mean, just go on social media and search up fish tanks, and alot of what will show up is freshwater fish crammed into a one or two gallon tank, filled with plastic. Unfortuantly, sometimes I also see that with the saltwater fish. So yes, I agree with your point. People should not have a budget to where they can't properly care for the fish. But, it can vary greatly from person to person.