Raspberry pi (RPI)
Though cost was more or less the same, I was keen on not spending more for the peripherals. All other boards except RPI demanded HDMI output. Unfortunately I did not have a HDMI monitor or HDMI enabled TV. So there came the RCA video output of RPI seemingly lucrative. I just connected RPI to my TV and got my TV turned as a computer with the wireless keyboard and mouse I had bough for INR 600. Later I pulled out the reverse parking monitor from my Dad's car and started using it on RPI to make it portable.
The second reason for choosing RPI is because of the freely available GPIOs on it, which will open doors for interfacing custom peripherals. The third reason is of course the forums and support.
So this is my hardware budget.
RPI - INR 3000
SD card - INR 490
Keyboard and mouse - INR 600
I use my samsung mobile charger with micro USB port as the supply for my RPI and I additionally use an ethernet cable to provide connectivity to my RPI.