Dinosaur Hunt Diamond Promo Pack contains 2 games:
Survival Zombies The Inverted Evolution (Early access)
1. Dinosaur Hunt Gold Promo Edition contains only Dinosaur Hunt but with all the add-on content for 64p. http://store.steampowered.com/bundle/419/
2. Publisher Complete Promo Pack contains both games and all add-ons for Dinosaur Hunt for £1.03. http://store.steampowered.com/bundle/1011/
You can only buy these packs if you don't own any of the content already however a workaround is to log out of steam on a browser and add the pack you want to your cart then to log back in to buy it as a gift which you can activate yourself. This will also split the pack giving you the individual pieces in your gift inventory.