Value of 2 player 49-way joystick setup with rotary interfaces?

[KenToad]

After many years of not using it, I finally dismantled my bartop arcade.

http://forum.arcadecontrols.com/index.php/topic,37665.msg335697.html#msg335697

Now, I have this setup of two Happ 49-way joysticks, two GP-Wiz49 Max interfaces, two rotary adapters, and Druin's rotary interface. I have all the original stick components, along with the upgraded rubber grommets from Groovy Game Gear, and versa49 cherry red balltops and versa49 black metal dust washers. Since everything is still wired up, it's practically plug and play. Everything I have was purchased new from Randy T at Groovy Game Gear (Joysticks and interfaces) and, IIRC, other BYOAC members (rotary sleeves/interface).

I've been looking around to try to figure out what the value of all this stuff is and it's not really clear. Anybody have a ballpark guess for any or all of the parts?