Indie game storeFree gamesFun gamesHorror games
Game developmentAssetsComics

That would really depend on the size of the track/how many are added and what else is added. Let's say you keep the art style, add a couple new tracks maybe another car or two I could easily see 5.99. now if the graphics were made more realistic, a bunch new tracks and cars, sound effects, ai etc I'd pay like 20 to 25 range.