You can thin Rustoleum Gloss Protective Enamel with acetone and brush it on*, for way cheap.  Thanks to the quick drying time of the acetone, it is a snap to achieve a "paint brush streak" patina using this method that is practically impossible to achieve with a spray gun, even if you do stoop to using women's underwear in the painting process.

* This is for the Banshee from Randy Powell.  I covered the wings in red Monocoat because that's what I had.  I was showing it off to my RC club and got the comment "but that tail is an ugly color of red" (it looks like it covered with red tissue, then faded thoroughly in the sun).  Claiming just working on it enough to make it fly nice didn't, well, fly.  So now that tail is an attractive color of red, with its distinctive patina.

I remember a new guy in the RC club I used to belong to, wanted a good finish on his first airplane.   He started to tell about the finish procedure and you could hear the groans.   He used a quart of clear on the base coat.   A quart of each color on the three color plane with another quart of clear to to it off to a high gloss.   Can you imagine a .40 size trainer weighing almost 9 pounds without fuel.    He did build another plane.   

I too used to get remarks when I did transparent finishes on some of my RC aircraft.   And then they wondered how I could take off at half throttle and fly the same airplane design that they had to go full throttle.

Yea, ah, Front Line? Maybe Mid-Line. Maybe.