what's the conversion rate of btb-igb? I think it's 20k igb= 1btb, but someone told me it was somewhere around 80k igb= 1btb? So I'm having some doubts ._.
It was 20mill = 100TBT, so 200k = 1TBT, but those threads seem to be gone (probably because dropping that many bells is awful), so I would say there is no real rate right now.
You can almost certainly get at least 100k per 1 TBT. Like JeffreyAC said though, recently you could get as much as 200k per 1 TBT, so I would say anywhere from 100k-200k per 1 TBT would be fair on your end ^^.