It's pretty fascinating to refresh the usage page on the API site while working [0].
After initialization it was up to 500k tokens ($1.50). After a few questions and a small edit, I'm up to over a million tokens (>$3.00). Not sure if the amount of code navigation and typing saved will justify the expense yet. It'll take a bit more experimentation.
In any case, the default API buy of $5 seems woefully low to explore this tool.
replies(3):