The props are pretty stringent on previous licences. I cannot for example sell you my previous licence now I have upgraded to 9 because my serial for the reason upgrade is tied to my previous licence. Therefore I will loose access to my upgraded software.
I do however have an NFR licence for Reason 6 which is separate, however I cannot transfer my NFR licence to you because it is tied to my account and anyway you would not be able to use it to upgrade.
So asking for someone to give you a previous version is really not going to happen unless they want to sell up their licence entirely.
Read here:
https://www.propellerheads.se/suppo...ts/buyingselling-used-propellerhead-products/
At the end of the day its a 300 quid bit of software. Its also a pretty incredible bit of software. Careful, you may find you prefer using Reason to Pro-Tools/Cubase/Whatever. I certainly did and now its my primary DAW. I occasionally receive mockery for this and frankly I don't care
I worked for a well known music magazine and had access to literally everything for literally nothing (hence the historical NFR licence for Reason). At the end of the day (at least for my modest ongoing needs) I chose Reason. Its awesome.