I think that the items in the shop are a bit of a rip-off, i mean unless you were a cash buyer who bought cash and spended it alot, then only they would buy the items, since you waste 8 cash or a bit less just for something for a day! Maybe expand it to 5 days? Maybe 4?
First of all 100 cash medal? Only cash/kred buyers will get that. Second, 1000 cash? In your dreams! And finally 10000 cash?!?!? Are you f**king kidding me! No in the right mind would ever get that!
I think that as you level up, you should get more than 500 coins for leveling up, i mean, im level 29 with the WA2000, i want more coins for better guns, but 500 coins a level? Pff....