I'll pay you NOTHING.
I designed and created GWARCADE, completed in February-March of 2005, with documentation. Trademark it and you'll be paying me $1000.
It's been running happily in my gameroom ever since.
Besides, you can't trademark GWARcade, since it's based on the GWAR trademark, and I"m willing to bet you don't have a license to make any money off the name. Dimwit.