StackSocial offers The Ultimate Android Development 6-Course Bundle for around $11. (Choose the "Beat the Average Price" option: this price is based on the average price customers are paying and may change throughout the day.) That's about $49 less than buying these courses separately elsewhere. It includes lectures on creating Android apps from scratch, programming with Java, and setting up a free or paid server for your app.
Of note, you can also get just the GK Micro's Android Mobile Apps: Beginner to Published on Google Play Course for just $1. (Select the "Pay What You Want" option and enter $1.) Deal ends May 11.