I'll be updating this post as I do more research
1. SCROLLABLE
PROS:
You can easily highlight the items by changing the colour and/or adding extra labels
Easy to change the position in the queue based on your needs
Easy to add new items
This design works fine on any device, whatever it is the screen size of the device
Visually it is very appealing
CONS:
Items are hidden
The developer relays on the user swipping the queue to the end
You can not fit too many objects on the screen due to its size
Mars: Mars
The bar at the bottom between the item and the price feels too intrusive to me. I think it would be nicer to have this information within the selected button

Rayman Adventures
Highlight how they used complementary colours to create contrast and stand out the items and labels

Odd Wings
I quite like the quality of the icons really stand out thanks to their size and quality. One point for the artist :)

Allen Creeps

2. BUTTONS
PROS:
Very functional and accessible
Easy to compare products
People are used to read information within a table
CONS:
Not very exciting
Adding new items may require a re-design of the layout and/or add pages
The developer relays too much on the player buying an item just because they need it as they don't look very appealing
You can not fit too many objects on the screen
Bullet Boy
From my personal point of view, the menu looks far too simple

Pudding Monsters
Despite it is not super exciting, the designers made good use of the available room and made a simple menu look beautiful and appealing

Allen Creeps
This is just very appealing :)

3. SCROLLABLE + BUTTONS
PROS:
Same than Scrollable
Same than Buttons
CONS:
Same than Scrollable
Same than Buttons
It is not really a con but I prefer just one system to interact with one men. It may be quite personal
Tinny Bombers
Special mention the presentation of the collectables at the bottom. this is a nice combination of two kinds of Menu

4. LISTED
PROS:
Tidiness
Functionality
People are used to read information from lists
Perfect for games with many items because items don't need over too much room of the screen
Perfect for games that need their icons to be explained
CONS:
Some items may be hidden
Not ugly, but it is not the most appealing look for a Shop either. Still a list of items
NonStop Knight
I really like the way they split the screen and kept showing the gameplay. It is like watching TV while looking for other channel on a Smart TV. Clever :)

Hocus Puzzle
Very clean design. I quite like the art of this game. Bigpoint did a good job :)
