The PCC from DSE came with 1 battery, 1 atomizer and 6 prefilled carts. I think it was about $27 for it and shipping is a flat $15. Unfortunately, you don't get free shipping unless you order $200 in one order.
The Magma PCC is a smart PCC. Once your battery is charged, the unit turns off the charging mechanism. And it won't drain the battery while it's still screwed on. Pressing and releasing the right side of the switch will show you the cases remaining charge. Pressing and releasing the left side of the button will shine a red light. Holding in the left side of the button for about 4 seconds will keep the light on until pressed again to turn it off. Pressing the right side for about 4 seconds will start the charging process on a battery screwed into the charging slot (if it needs charging). While holding the right side of the button, you will see (with the case lid open) the battery led flash and then the cases display window will change from red to orange. Your battery is now charging. If you press the right side of the button (and release) while charging you will see the orange led. When the charge is finished, pressing and releasing you will see the red led case charge.
I hope that helps.