How do you have all those accounts?
It means they were either hacked or you verified them using fake or stolen KYC documents. Selling of such accounts is not allowed in the forum and no one should trust you
You are only allowed to sell accounts/invites that you legally obtained yourself or through legitimate trades. If you did anything illegal in order to obtain an item, then you can't trade it on bitcointalk.org. Anyone found breaking this rule will be banned.
Accounts on sites that require KYC such as bank accounts, PayPal, etc. are assumed to be hacked unless you explain why they're not hacked.