Best Buy is currently discounting the HTC Desire 510 to $39.99. That is $60 off of the retail price and $10 cheaper than what it currently sells for at Amazon.
The phone features a 4.7" 480 x 854 display with a 1.4GHz Qualcomm MSM8916 quad-core processor and 1GB RAM. It has just 4 GB of internal memory, however it is expandable with a microSD card. A 5mp camera is on the back, with a 1.3 mp selfie cam. Android Kit-Kat 4.4.3 is preinstalled.