Got to be stolen at that sort of price! Why would you ever sell something for less than you paid, within reason?
BlackDragon you will need about 3 tools to get that bottom bracket moving. An 8mm allen key to remove the crank bolt, a crank puller to take the cranks off the BB and a spined BB tool to remove the BB itself.
If it is moving the way you describe then I'd get it nipped up ASAP before you damage the threads. The play should be on the bearings within those splines you can see. I had a bike today where it was creaking and it was literally not even hand tight in the frame.
BB tool
http://www.parktool.com/product/bottom-bracket-tool-bbt-22
Crank remover
http://www.parktool.com/product/crank-puller-for-square-taper-cranks-ccp-22
There are cheaper ones out there just make sure they are for Square taper not ISIS or Octalink.