The point here is that $1 and $10 are two different things, and you cannot pretend that they are the same thing.
This is a path where the person grows spiritually and physically, and gets to a level where they are able to make money and give support, whatever their social status is.
Moreover, to ascend to the higher categories, it is not only necessary to pay, but it is necessary to develop spiritually.
If, for example, a Somali donates $1 dollar which is 10% of his salary, and an American donates $10 which is 0.1% of his salary, these two people are viewed differently by the Gods.
Everyone donates according to his or her situation, and the Somali who donated $1 will someday be able to donate $100, and he or she will be more important because he or she understands the importance and value of JoS, unlike the American who donated only $10 (pity), compared to the $1,000 he or she earns each month.
Understanding the importance of JoS is a symptom of spiritual development, and can be a factor in raising one's level in the categories.