my min bid of 329 EUR didnt cut it - it was outbid (3x by the same person, 409, 419, 429). 90% sure that this person didnt get an upgrade either, as the inventory was 5 seats before and after the auction closed.
got no OLCI offer too, which I figured I might have as there were 5 seats open. Inventory was 1 seat overall a few hours before the flight. Looks like 4 people purchased/upgraded once OLCI opened