It is just a mistake of zero the price is 10$ .
PM for proof .
In opening post it is still $100 and why are you just using capital letter use normal one.
Also talking about whatever method you are trying to sell why you are selling it for $10 if you are making $1000's using it. I don't think you want to help others because if so you could have offer this for free rather than making new account to post fake review.