Here is the link (and what it says about the pass & purchase) for the monthly payments if that is what you want. You will not get the 6 months free though...
http://www.universalorlando.com/annualpass/ap_pref.php.html
You can enjoy 365 days of unlimited park-to-park admission to both Universal Studios Florida & Universal's Islands of Adventure with no blackout dates, free parking^, and discounts on food and merchandise for the regular price of $199.99 plus tax.
In addition, the 2-Park Preferred Annual Pass includes:
10% savings on 1-day and 15% savings on multi-day theme park tickets (up to 6 people)
Free admission to select special events such as Mardi Gras & Holidays
Special discounts on separately ticketed events, such as Halloween Horror Nights and Rock the Universe
10% savings at most merchandise stores (restrictions apply on select merchandise)
Savings of up to 10% at all restaurants (excluding carts and alcohol)
Come back this Spring to ride the new attraction based on the The Simpsons
See a complete list of 2-Park Preferred Annual Pass discounts.
Flexible Payment Option: 2-Park Preferred Annual Pass for Under $18 a Month!
You can purchase your Preferred Annual Pass using Universal Orlandos Flexible Payment Option. When you do, you will receive 365 days of unlimited theme park admission for $17.74 a month.
Questions about the Flexible Payment Option?