I hate Ebay.

Okay,put something on ebay.
I only ever do flat rate shipping pretty much,I loathe shipping stuff and i'll eat a couple dollars so I don't need to estimate.
I got a message from someone asking if I would ship to Brazil.
Told them I would check since it was already packaged up and ready.
Sent them back the shipping total and said sure no problem ($50).
Person won bid (ended friday the 26th).
Sent message asking for paypal address for invoice-no answer.
Next day I see where I can invoice the bidder so I do that.
Nothing else till this morning when I send message saying I was going to relist if no contact.
This is the message I recieved back


"Dear peaches0172001,
Hi,
Excuse me for the delay.
I checked my Credit Card, it was denied. I will contact my bank and pay as soon as I can.
Thank you
- virtual302v8351"

Sounds like the guy has no money,and i'm kinda pissed.
But I tend to overreact on stuff like this.
On one hand,I know contact will be hard to another country and this is that Holley EFI computer so love to help out an enthusiast in another country.
On the other hand,I hate debt,credit and the like-if you have to borrow than you're broke. So I feel he is wasting my time and bid because he wanted it,not cause he could afford to buy it.

What do I do?