Approx 499 usd
The Xbox one will be $499 USD at launch.
$499 (USD)/€499/£429
1 euro is worth 1.4 usd
USD 7.84
3.75 usd
1 EUR = 1.3065 USD
50-100 USD
36.5 usd
As of today (01APR2011), 20 Canadian Dollars is worth about the same as the USD, at $20.73.
$1.62 USD
$700