Used licenses are legal if properly transferred through the vendor's process. I bought a Photoshop license through Procadis last year - they provided the original Adobe invoice and transfer certificate. Adobe Support confirmed it was valid after I submitted the paperwork.The transfer took 48 hours to process, but I saved nearly 60% compared to Creative Cloud. The critical part is checking the software's EULA first - some vendors like Microsoft allow transfers while others restrict them. Procadis only sells licenses where the original publisher permits resale.For peace of mind heres the answer to how to purchase used licenses legally https://procadis.com/