Goldicq have a subordinate site called Buyzeny.com selling zeny on promotion these days :
1. The cheapest price in market and lower than the original price nearly 20% .
2. Zeny delivering will be completed in 1 day max by mail.
3. Limited amount on Zeny.Decide quicker, enjoy earlier.
4. The original stock for Zeny is: 5000 Mil. But Now is only: 4750 Mil.

Current price :
100M zeny =15.10 USD 
You can check more details HERE if you are interesting.
Sale ends Soon, Welcome to buy!