regarding pacha tickets, I'd recommend to get the tickets as early as you can. next week's music on as well as solomun opening party have just gone up in price. I think more dates might go up in price this summer...
also can see this being a general pattern, not just for pacha but for more venues. so really, once you're sure you do wanna attend a party, don't wait and get your ticket. don't forget you can cancel your tickets if your plans change - as long as you've bought them with us that is!