I had a home wedding and I was cheap. Got a small cake to cut from the market. It was freakin' delicious. And some cupcakes with those round party sprinkles to go around. It looked nice, and wasn't expensive. (We also got drunk the night before and made a small Pac-Man grooms cake ourselves from a box of cake mix, and cheap ready-to-use fondant. lol.) Just for shits and giggles. No one was really supposed to eat it. It was our evenings entertainment. 'Our', being my sister, my friend, and I.
I went around looking for a traditional one, to begin with.; and then a gamer cake. All of them told me the same thing, they can make it if I wanted to spend the money, but if it was too elaborate, it may be inedible. Or if it is edible it's hard and gross. So you paid all that money for a cake you can't, or don't want to eat, but will still go bad. I know it's supposed to be the one day for your whole life, but there was no freakin' way I was spending $350 (+) on a cake, that will eventually be poo.
Then again, I'm cheap. People had to force me to spend money for my own wedding, and I was the bride. It couldn't have been more then $500-$600 for everything, non-denominational minister included. I made a lot of it myself.
But you know, I'd probably get the dragon too.
EDIT: Or if you are open to something else, Futurama brain slug cupcakes.
Just looking at them makes me giggle.