Hi 
I have a ton of IGB so I'd like to sell them for some TBT.
As a baseline price I'll say 4 TBT per 1mil IGB, but if you really need bells and don't have much TBT I'm willing to sell for less
I'm not too familiar with the methods but I don't mind dropping them in your town or the Re-Tail method, but dropping would probably be easier.
So,
4 TBT = 1 mil IGB
40 TBT = 10 mil IGB
400 TBT = 100 mil IGB
and so on.

I have a ton of IGB so I'd like to sell them for some TBT.
As a baseline price I'll say 4 TBT per 1mil IGB, but if you really need bells and don't have much TBT I'm willing to sell for less

I'm not too familiar with the methods but I don't mind dropping them in your town or the Re-Tail method, but dropping would probably be easier.
So,
4 TBT = 1 mil IGB
40 TBT = 10 mil IGB
400 TBT = 100 mil IGB
and so on.