It is impossible to purchase a second-hand SOLIDWORKS license because French and European law prohibits it. Indeed, a software license is non-transferable...
(See paragraph 3: you may not sell, license, subcontract, transfer, assign or lease (including timeshare) the Offering or the rights to access and use granted by this Agreement)
you know the person @ Lbfdoe79has asked a single question since 2017 and has not followed up or thanked him and has never set foot on the forum again. (we sorely miss him as you can imagine)
Send him a private message if he asked to have a follow-up, then the message may reach him ;-) ;-)