I found these throughout the internet in the hopes of getting Professor McGonagall or Hermione autograph. Either way, my wife had fun opening these. 5 boxes did yield 4 autographs and a very nice prop card. 2 boxes had the same prop and autograph...i always find that weird.
These both come in each box so we have 5 sets of 2.
Costumes:

C1 Jamie Waylett as Vincent Crabbe 295/660

C3 Harry Melling as Dudley Dursley 460/660

DC4 Dual Costume of Josh Herdman as Greg Goyle 166/460

DC4 Dual Costume of Josh Herdman as Greg Goyle 179/460
The best costume card we pulled was
C2 Tom Felton as Draco Malfoy 36/170. It's quite a thick card.
Our one cool prop card was
P3 Basilisk Skin 145/160
Our 4 autographs were:

David Bradley as Argus Filch

DE3 Philip Rham as a Death Eater - Dual costume/autograph card, pretty neat!
The best autograph was this:
Jason Isaacs as Lucius Malfoy
No McGonagall or Emma but we did get Filch and Lucius, whose autographs we did not have. The basilisk skin is very cool I must say.
The extra Filch auto and Goyle dual costume are for trade/sale. Thanks for looking!