Hi there. I would like to know if the cards works fine for a monthly subscription.

Basically I need to have in the card at least, $300. This would be to paid 2 months(charged each month) of a product within https://oneuptrader.com website(They say they accept Visa & Master).

So what I need to know:

1- Are these cards working fine when using them to pay a recurrent payment? Do you have customers who do this?

2- Is there a way to charge balance up, after buying a card? In example, if I need to buy one card with $150 and then I would need to put more money, let's say around $150 more? Is this possible?

Thanks for your response and help.