My guess on the upgrade price from P4: I think it would be too optimistic to expect anything below $150. I guess it depends on how many copies of ProPack CL has sold. If they sold not too many of them, then we may hope in a $100 upgrade price for Pro Pack. If they sold many copies of Pro Pack, then we shouldn't expect the ProPack upgrade to be less than $150. With such premises, I would expect one of these two guesses: guess 1 propack upgrade $100 poser4 upgrade $200 guess 2 propack upgrade $150 poser4 upgrade $250 Considering that there'll be VAT (20% for me here) to be added to the price, I really hope that it'll be guess 1, otherwise I would risk to be left out of the Poser 5 wave. So to summarize: $200 would be at the same time a realistic upgrade price and a not-too-disastrous one for most P4 customers; I vote for this one ;-) $250 is (I'm afraid) the most probable guess, but I think that this price + taxes will begin to leave out a non indifferent part of low-budget Poser users $300 would be a major catastrophe (at least for me).