How much can i sell this paintball gun for?

I have a 98 custom pro (double trigger) with an E-Trigger installed. I also have a Tippmann Triumph SSL-200 ( i think its called) with it which is the tippmann electronic hopper. The gun is in used condition so its now very new but will be average when i clean it all out. I will also sell a J&J Ceramic 14" barrel with it. The gun also has a Car Stock but the bolt that holds piece u push to change the positions fell of....its the part you push down and then extend the stock or dextend. I might replace it but it might not be the same bolt but should still be fine. So guys, how much can I make for my gun with these things?