At first I thouht the Pro would get a price reduction close to Scorpio's launch, but lately there are many deals popping up ... I've seen it for around 375 on amazon (europe), I've seen games being bundled with it for 400 (horizon, re7), I've seen a buy a pro (400) get a 40 card as well (game) and now there is even a pro+horizon+deus ex (not a new game, but its still a 2nd game bundled). I am starting to feel that Sony can drop the price after E3 and not wait till the end of the year.
Scorpio for sure is more powerful than the Pro so its safer to drop the price earlier and make people jump in the PS4Pro than to wait for the end of the year where the same people might decide to just spend a little bit more and get a Scorpio instead.
I dont know how is the PS4 Pro doing outside of europe though.