smartcars costs $69.99 while the standard package for custom kacars is $40, you pay for addons to it, so you can spend a lot more. I got mine for $55 originally, I have since added to it, and am changing the design of it now too. I don't have smartcars and never will. Custom kacars has been fully customizable from the get go, where as you have to wait till version 2 of smartcars for that ability. For it to be worth the money they are asking, it should have been fully customizable from the very start.