Count me as a skeptic on this $50 dollars a day talk.
Is this TOTAL, or PER PERSON in a multi-person family unit (which would allowing pooling of income vs. the relatively fixed portion of the costs)?
In the USA, and not under an Interstate bridge or in a tar paper shack?
People can be led astray by totalling "expenses" over a small window of time, then extrapolating that amount out over a long period. What can get left out is maintenance costs, and amortization (help me here, Ted, is amortization the proper financial term?) of new/used replacements for capital goods.
Some examples... Just because you didn't have any housing maintenance or replacement costs last month, think of some of these that will be needed over time, and they surely will:
Water heater, stove/range, refrigerator, microwave, dishwasher, clothes washer and dryer, lighting, furnace, air conditioner, overhead garage door, flooring incl. carpeting and pad, Roof (they don't last forever), inside and outside surfaces renewal/replacement, plumbing and fixtures repair/replacement, "must have" electronic items, all just as a quick and certainly not complete example!
Then move on to car(s):
Gas, insurance, license plates, safety inspection and/or emissions tests if applicable, expected wear-outs (tires, brakes, battery), expected changes (oil & filter, AF, ATF & filter etc.), long term wear-out items if the car is held "long", and the unexpected maintenance/repairs that will surely happen. Include labor and well marked-up parts costs if you don't do the work yourself. Also include the intangible "opportunity cost" of you getting sheared when someone else does the work.
Now include the amortized cost on a per-month basis to acquire a suitable replacement vehicle whether new or used. Because yours will need to be replaced. Don't suddenly predict long car lifetimes if you have been switching cars every few years.
I could keep going on and on...
So I'm in the skeptic gallery