How much would you be willing to pay for a very slightly used 22" WSM?

[John Leopard]

I took mine to a Mardi Gras parade a couple of years ago and smoked some ribs. An older woman there was so impressed that she bought one and has only used it about 4 times.
My B-I-L with whom she works, would like to buy it but I think she wants almost full price.
What would you offer?

 

[MannyE]

Knock 20% off for not being able to open the box and enjoy the "new".

 

[K Kruger]

Ditto.

 

[Jim Lampe]

300 for 22"
200 for 18"
considering...