All I know about Limbus can be found here =^_^=

ffxiclopedia.org

http://www.playonline.com/ff11us/topics/060405.html

"A single payment will give you access to a Mog Locker for the period of time set out in the lease. If you allow your lease to expire, you will lose access to the items stored within your Mog Locker. These items will not be permanently lost, but will simply be unavailable until another lease payment is made.

We first considered having the Mog Locker lease payable in gil. However, with the total amount of gil circulating in Vana’diel seeing a continued decline, we decided to change the payment to require items exclusive to the Treasure of Aht Urhgan areas. It will be possible to trade these items, as well as find them on the auction house.