Ending 8/31/14, Marvel has the complete 2003 Wolverine series on sale; issues 1-74 plus the Old Man Logan Giant-Size #1.
https://www.comixology.com/Wolverine...&list3478_pg=3
There is a bundle option for $69.99, although several of these have been free or on sale in the past, so the bundle may not be your cheapest option.
https://www.comixology.com/Wolverine...009/bundle/784
From Fantagraphics ending 9/1/14, a Joe Day sale includes The Scrublands collection for $4.99, The Red Monkey Double Happiness Book for $6.99, and the Dungeon Quest books broken up into singles.
https://www.comixology.com/Joe-Daly-...=Fantagraphics
From Dynamite ending 8/31/14, a Kirby Genesis sale.
Kirby: Genesis 0-8 (0 is free) or all in collection for $6.99
Kirby: Genesis Silver Star 1-6 or collection for $4.99
Kirby: Genesis Captain Victory 1-6 or collection for $4.99
Kirby: Genesis DragonsBane 1-4
https://www.comixology.com/Kirby-Gen...ntent=Dynamite