Namecheap is running a promotion to their Mobile app (Android/IOS)
When you download their app, you can buy domain for only 2.88 USD the first year !

I dont know on how many domains it appeals but i tried it to see if it works
So i searched for some available a2s domain
In the mobile .club was available
Price for 1 year was 2.88 USD
When i searched for it on pc version the price was 7.88 USD
So if you wanna a domain for 1 year this is a deal for you !

*Click the image to get to namecheap mobile deal