Last time I checked the marketplace it was approx 22.5 for 100 so some people go 20m some 25 I would say it is at least 22 but again that was 3 weeks ago and it shifts like crazy, however selling tbt for IGB is a wonderful thing if you have a new town going or starting and can not transfer to yourself as most cannot. I am starting a new town soon for this year and will likely trade off there but as Morning said the tbt marketplace is the place for that but that's an approximation of what to ask per 100tbt if you are going to offer there at least 20 m or you could say offering current tbt rate per 100 tbt for IGB and they will know what that is..or if someone is asking you that's about what is fair within 5mil. Hope that helped but yes the tbt market is where to go from there.