[Agent]

Another thing to keep in mind is that he vastly undersold the ISK.

Assuming that it's referring to the American billion:
1,000,000,000 * 200 = 200000000000

Now in Eve you can "sell" the timecards that are used to pay for the game to other players. This is a player controlled market, but they generally sell for around 700 million ISK. A Game card costs about £25 for 60 days. So:

200000000000 / 700000000 = 285.71.... time cards
285 * £25 = £7142.85 in "real" money equivalent.