The medium cash bag is an uncommon item won from Treasure Hunter. When opened it will give the player coins based on the player's total level. During the weekend of 1 February 2013, the gold received from the bag was doubled.
The coins received from a medium cash bag is a random number between $ 9X $ and $ 11X $, where $ X $ depends on the player's total level^{[1]}. In the formula below, $ L $ is your total level.
$ X = \begin{cases} 750 + \left ( \frac{L}{27}  1 \right ) \times 22 & \text{if }L < 324 \\ 1000 + \left ( \frac{L}{27}  12 \right ) \times 75 & \text{if }324 \le L < 1404 \\ 4000 + \left ( \frac{L}{27}  52 \right ) \times 125 & \text{if }1404 \le L < 2268 \\ 8000 + \left ( \frac{L}{27}  84 \right ) \times 133 & \text{if }2268 \le L \end{cases} $
This means that it is possible to receive the following amounts of coins at the threshold total levels:
Total level  Coins 

27  6,750 to 8,250 coins 
324  9,000 to 11,000 coins 
1404  36,000 to 44,000 coins 
2268  72,000 to 88,000 coins 
2715  91,817 to 112,220 coins 
If opened on a nonmembers server, members skills above level 5 will not be counted towards the skill total for the calculation.
Drop sources
 This list was created dynamically. For help, see the FAQ.
 To force an update of this list, click here.
 For an exhaustive list of all known sources for this item, see here.
References
 
Exclusive rewards ^{(Limited)} 
