Saving Account Leger Balance = $1.00 (Its quite common)

I was drawing money at an ATM Machine and someone had left the Transaction Receipt behind. I took it and take a look:

Withdrawal $20.00, Ledger Balance $1.00.

Assume that this person is a Singaporean, I just got reminded that not many people are rich. Take a look at those Transaction Receipts left behind, how many people have 4 or 5 figures in their banks? Local Banks will charge Account Holders if their balance are below $500.00. Sometimes $20.00 means alot to poor families.

Or course, this could be a foreigners', Students' account.