Let's throw a wrench in there.. and create the following profile of the freelancer:

1) Under 21 years old.
2) Living with parents.

Because they may have not decided (or not asked) to contribute their earnings to the upkeep of the household, 100% of revenue is for their own use.

Hence, any amount between RM500 - 1500 is acceptable by them. Maybe for someone below 17 years old will accept less than RM 500.

But if we added the following criteria to our profile above:

3) Contributes to household upkeep.

Then wouldn't this situation be similar as you've described about a company paying for overheads ? 

If you described it earlier like this, then it would've made perfect sense to what you had written prior to this.

Looking at the poll and grouping the first few category of amounts, it looks like many are in the less than 2000 category. Hmm..