Cheapest i have seen this. Kombat Pack 1 Link
If you buy pack 1 & 2 for £5.74 it will make the base game the XL package
Kombat Pack 2 grants access to 4 new playable characters, as well as previously released content including Goro, Kold War Skin Pack and 2 Klassic Fatality Packs. New characters include Horror icon Leatherface, and the Xenomorph from Alien . Bo’ Rai Cho and Triborg the Cyber Ninja complete the offer. Also includes the Apocalypse Pack with three new character skins.