Hello
Hi I'm interested in buying your bike today. 
Great I'm interested in selling! This bike is fully loaded with everything an off road enthusiast would want.
The only thing is the price it's a bit much. Could you come down? I'd be willing to offer 100 bucks for it  
I paid 500 for it last year. The list price really is just about as low as I can go.
125 is the best I can offer. My car just broke down so I'm looking for a commuting bike. 
I've got an extra tire I can throw in, but I'm sorry the lowest I can go is 200
Would you do 175 if I can come pick it up?