I would like to buy a Mono cherry speedy 25 from my friend. She bought 4 years ago. I did not see the bag yet. If it is no stain, only the color changed on leather, how much I should pay for it ? I was thinking to buy a speedy 25, maybe Damier 25, not sure. I already have a Mono speedy 30. If she offer me the price very close or higher than Damier speedy 25, how can I chose ? Any Idea ?