MeneR,
If you are talking about the EK4 with the .90 engine, this is what it says under the pic:
UPDATED 03-15-03: Right now, we plan to carry the Thunder Tiger EK4 Unlimited with Pro-90BX engine. Last we checked, product pricing and availability information were not yet available. Check here for future updates.
I admit that would be one heck of a motor for a monster truck but I think if I get hte Ek4 I will opt for the .70 and the 2 speed since this is available now. I don't like to wait for my new toys