That chassis is 130 bucks with no weapons, electronics, or even motors.
Weta is 150 bucks same thing.
A good class to start out in is hobbyweight, you can get drills from Harbor Freight dirt cheap, with a coupon, I can get two drills plus batteries for 30 bucks. With skillful handiwork, you can also build much of your bot from UHMW cutting boards from the Dollar Tree. From same cutting boards, you could also fashion your own hubs, and bolt on Colson wheels, nice, durable, wheels for a good price. For the ESC a Scorpion XL could work wonders for you. For a Radio, if you want to go bottom of the barrel, the HK-T6A from HobbyKing should get the job done. Adding that all up, it will come to about 180 dollars, all from scratch, a far cry from any of the "kits" offers.
I hate to be a soil sport to SKBT, but to build the Trilobite would be nearly, if not, 300 dollars, and that's not even including shipping and taxes. It's simply not a good starting point for beginners.