I would possibly consider going a little less than is normally paid for an upgrade because i need the vouch with somebody ELSE going first. This will show i AM trusted!
Minimum of 4.5m for the upgrade - You are going first. Highest offer wins.

Bids end in 4 days or so.

A/W - 8.5m.

If you're trusted (I will decide if you're trusted) and you're paying a good price, i'm totally happy for your 50%, then my upgrade then 50%.

Happy birrind!