$30 lasts me about a week, but I have a massive ineffiecint engine. Go with a traxxas if you are worried about the cost of fuel. I think of mine as being like a honda truck; economical, reliable, well built, good preformance. Then there is my losi, I think of it as being more like a Mack truck, burns way more fuel than it needs to, reliable but because of the application there is always something that needs fixing and the raw size and power is amazing. Now what one I drive more? When I look on my shelf and see a "mack" and "honda" the choice is obvious.