What is the top 10 best selling iphone apps of all time?

And (If you could answer), What do these all have in common.
Such as. Characteristics and reasons why so much people have bought them.

1) Where's my Perry - Disney - Games - $0.99

Where's My Perry is a challenging physics-based puzzler where you need to use water in all its different forms, ice, steam and liquid, to solve the puzzle. Overflowing with intuitive controls, vibrant spy-themed graphics, and best of all, lasers, you will be immersed in the world of Agent P!

2) Temple Run: Brave - Disney - Games - $0.99

From Imangi, the makers of Temple Run, and Disney comes a new take on the most exhilarating app in the App Store. Join Merida from Disney/Pixar Brave as you run, slide, jump, turn and shoot your way across the wilds of Scotland on an endless running adventure!

3) Angry Birds Space - Rovio Entertainment Ltd - Games - $0.99

Angry Birds Space features 80 interstellar levels on planets and in zero gravity, resulting in spectacular gameplay ranging from slow-motion puzzles to lightspeed destruction. With regular free updates, new in-app purchases, brand new birds, brand new superpowers, and a whole galaxy to explore, the sky is no longer the limit!

4) Dead Trigger - Madfinger Games - Games - $0.99

Smash hordes of bloodthirsty zombies? Secure vital supplies? Save other survivors? Protect the Safe Haven? Explore the city? And uncover the provoking truth in this intense FPS action game!

5) Kingdom Rush - Armor Games - Games - $0.99

The acclaimed action fantasy defense game is now available for iPhone and iPod! Get ready for an epic journey to defend your kingdom against hordes of orcs, trolls, evil wizards and other nasty fiends using a vast arsenal of towers and spells at your command!

6) WhatsApp Messenger - Whatsapp Inc. - Social Networking - $0.99

WhatsApp Messenger is a cross-platform smartphone messenger currently available for iPhone, Android, BlackBerry and Nokia phones. The application utilizes push notifications to instantly get messages from friends, colleagues and family. Switch from SMS to exchange messages, pictures, audio notes and video messages with WhatsApp users at no cost. All features are included without the need for extra in-application purchases.

7) Mega Man X - CapCom - Games - $0.99

The super masterpiece of the action game "MEGA MAN X" now powered up!
With variety of weapons and reinforcing parts, break Sigma's dark ambition down!

8) Where's My Water - Disney - Games - $0.99

Where's My Water? Is a challenging physics-based puzzler complete with vibrant graphics, intuitive controls, and a sensational soundtrack. To be successful, you need to be clever and keep an eye out foralgae, toxic ooze, triggers, and traps.

9) Camera+ - Tap Tap Tap - Photo & Video - $0.99

Whether you're a seasoned photographer or someone who's barely touched a camera, Camera+ will make you love taking photos. Everybody has a creative side… Camera+ will help bring that creativity out in you, all with a fun, innovative, and beautiful design.

10) My Calendar Mobile - K Factor Media - Utilities - $0.99

The most popular calendar application on Facebook with over 100 million users is now on the iPhone! With MyCalendar Mobile, you will get never forget your friends' birthdays again!

There you go the top ten best selling apps of all time! This was a lot of typing so I hope I answered your question.

The followings are the top ten best selling iPhone apps for all time.
Camera+
Pocket God
Angry Birds Rio
Tiny Wings
Words With Friends
Angry Birds Seasons
Cut The Rope
Doodle Jump
Fruit Ninja
Angry Birds

It also, you can go for a online shop to sell iPhone or sell old electronics or sell old iPad like cellitused, e-bay, amazon.