I see that you have already posted threads in the Stat Snapchats and OG Snapchats sum-forums of the Marketplace.
One of the reasons could be that a verified snapchat is not available on the market right now. If you see someone selling one, reply to their thread or message them about details of the account.
Another reason could be that because you are a new user, sellers might have trouble trusting you. I would recommend creating a detailed thread about your request that mentions the type of account you're looking for, your budget, your payment methods and whether you'll be willing to use a middleman.
I would also recommend spending some time around the forum and interacting with the community to build up reputation.
Good luck.
ONLY DEALING WITH REPUTABLE MEMBERS
NOT RESPONSIBLE AFTER SALE
ONLY DEALING WITH REPUTABLE MEMBERS
NOT RESPONSIBLE AFTER SALE
ONLY DEALING WITH REPUTABLE MEMBERS
NOT RESPONSIBLE AFTER SALE
ONLY DEALING WITH REPUTABLE MEMBERS
NOT RESPONSIBLE AFTER SALE