What does that mean?

it means that subeta made enough money from CSC purchases to offset the upkeep costs of the site, like server costs, staff costs, and other things.

Ahh. It must have been those bobbleheads

it's quite typical on the +15% bonus days for folks who are thrifty to buy all their CSC for the next month or so, so there are usually three days a month where the daily need is certainly met. When there's a new battle challenger, this is another example though usually only two days.

The bobbleheads are bonus.