Hello is the camcorder still available
Yes. Are you interested? It's in great condition
I am not sure how much I would use it but I could see investing $70.00 into it for this summer's adventures.
Based on the condition I was looking to get more like $90 for it.
Do you stil have any warranty left that you can move to my name?
Yes, the warranty is transferable 
Great!  Would you go $85?
Yes. That is acceptable. $85 it is.