On 4/9, blizzard said they were delaying the X-53 for several reasons, including giving people who wanted the zebra more time to earn it. And then they release it on 4/27.. so they gave people 16 days to complete a couple month process... I started the process and still want my Zebra. How the hell are you supposed to complete in 16 days!!!!

Pre-paid game cards and pre-paid game time codes will actually instantly apply game time to an account. So, if a veteran account wants to quickly qualify for the in-game mount reward, the recruit account can opt to subscribe using pre-paid game cards or codes. This is a subscription plan that many players end up using because it allows the veteran to qualify for the in-game mount much sooner than with credit cards, debit cards, PayPal, or PaymentOne

If you're interested, game cards are available at many local retailers, and game codes may be purchased on the Blizzard Store here: http://us.blizzard.com/store/details.xml?id=110000004

Unfortunately, the Zhevra is no longer available, so even if you did qualify today, you would still be unable to claim that specific mount. =/