https://steamcommunity.com/tradeoffer/new/?partner=39131397&token=6J0wmAcB
Doesn't necessarily have to be 4-pack, 3 x merc kings for 5 keys also works for me.
New Flat2VR Bundle
18 hours ago
Double Fine Publisher Bundle
4 days ago
Serenity Forge Emotional Impact Bundle
The Factory Must Grow
6 days ago
Hamble's Fright or Fight Halloween Bundle
New Haunted Mystery Bundle
23 hours ago
New Image Comics House of Horrors Collection
1 day ago
New Build your own Fantasy Ages Bundle
Cook up your own Culinary Capers Bundle
Mystery Chest Bundle
https://steamcommunity.com/tradeoffer/new/?partner=39131397&token=6J0wmAcB
Doesn't necessarily have to be 4-pack, 3 x merc kings for 5 keys also works for me.