Breakdown of the 3 shop categories: Skin - (Special) Offers - Gems  

1 - Skins:
    
You can use your hard-earned Stumble Tokens and Gems to try your luck in the Common, Rare, and Epic Skin roulettes.

Static offers:

Seasonal offers (offers that change over time, image is an example):

2- Offers:

The Offers section has limited-time packs that cycle once in a while. The Free Prizes roulette can also be found here.

Static Spin free offer (1 daily)

Seasonal offers (offers that change over time, image is an example):

Some offers are tailored specific to the your profile so you might see different offers than other stumblers. We try our best to make this offers the ultimate bang for your buck 

An example is when you enter the game and you see an offer like this:

Other times these exclusive offers show itself inside the Shop menu 

3- Gems:

If you’re running low on Gems and Stumble tokens, you can always consider topping up in the Gems section.

NOTE: Real life currency of each pack can vary depending on your country