Rj's Addiction

I am just getting into the nitro racing and the question is I just got a ofna 1/8 scale buggy with a .28 jammin engine with a jp-3 alum. pipe on it. I was wondering what something like this is worth, It looks new, he said all he did was run it on the blacktop. It that a good motor for the buggy or do I need something else. Thank you for you time guys.
Randy