The minimum threshold to fund an account depends on the payment type you're using. All payment type thresholds are explained in detail below.
Wire Transfer: There is no minimum threshold.
Online Purchase: The minimum threshold to fund an account via your debit or credit card is $50.00 USD.
PayPal: The minimum threshold to fund an account via PayPal is $25.00 USD.
It is important to understand that you may need to spend more than $100.00 USD in order to properly test and optimize your account. Any unspent funds available in your account is subject to refund.