If you’re okay with the legal and security risks, the content variety is decent. However, I’d strongly recommend using legal alternatives (even free, ad-supported ones) to avoid malware and potential ISP trouble. Proceed with caution — and a good antivirus.
Based on the domain name structure (using the number "3k" as a shorthand for "3000"), "3k movies.in" is likely a website dedicated to movie piracy, offering free illegal downloads of films. 3k movies.in