1. There's a chance that the seller has nothing to sell and you'll get scammed.
You can buy 1 Merit first and see if i have merits or not. I am here from 2015. You're a Kid.
2. There's a chance that the seller will merit your post(s), people will understand that's merit selling and your account may get negative feedback.
Lets check your post and see how many of them you bought
I wonder how chipmixer hire a dump signature spammer like you.