Hi Sacha... I don´t understand why they FB ask so much money for a day´s advertisement.. Perhaps that has something to do with the location or the country where you are in... I help a friend who does pencil/charcoal portraits put up ads on FB.. my location is in Europe where I üpalced his Ads and the target people are in the Philippines... I usually pay 7 USD for a seven-day Ad and the first ad had more than 20K people reached who viewed his FB page resulting to more orders... so your bill is just too much!
No idea why yours is far less then mine!! Just makes the whole FB platform even more unfair !!!