If you hate subscriptions, several high-quality alternatives offer one-time "perpetual" purchases that are fully compatible with .dwg files:

Instead of risking money on a used license that may not work, consider these legitimate ways to save: 1. AutoCAD LT (The "Lite" Version)

For occasional users, Autodesk Flex allows you to purchase tokens and only pay for the 24-hour periods you actually use the software. 3. Competitor "Clones" (Perpetual Licenses)

Older versions (like AutoCAD 2010 or 2014) may require activation codes that are no longer generated by Autodesk's current servers.

If you are a student or educator, do not buy a license. You can get free one-year access to the full suite of Autodesk products, which is renewable as long as you remain eligible.

Autodesk licenses are typically non-transferable . Even if you have the original discs and serial numbers, Autodesk may refuse to activate the software on a new machine.

Affordable monthly or annual plans are available. 2. Autodesk Flex (Pay-Per-Use)