RE: Carl Goldberg Ultimate 10-300 Brotherhood.
The last time I checked on the price of YS 20/20 fuel, it was $28.99 @ Hobbby People. For the price of 2 1/2 gallons, you can have 1 flight set of batterys. I have had my 2 sets of flight packs for over 2 years and they are still going strong. I get about 8 minutes of flight with each set. IMO, electric is much cheaper and cleaner than gas.