FameSwap is your best option if you are interested in purchasing a TikTok account with existing followers. Its a marketplace that allows you to filter the account listings by followers, whether they include the email account, accept escrow, and also the account category or niche.
- Highly Regarded Account Marketplace
- Save Time By Purchasing An Account With An Existing Following
- Lots Of Positive Reviews On Websites Like Trust Pilot
- Filter by account category, followers, email included, escrow accepted, etc.
- Features Such As Escrow To Protect You
Here is a screenshot of their account listing page. As you can see they also have Instagram and YouTube in addition to Tiktok accounts for sale.