The reason I ask is because I am very new here and I don’t know if there are any rules in place where newbies should not try to sell stuff until they’ve got a bit more “posts” as credits.
Someone please let me know, I’ve upgraded to a Mini 5 Pro so I have a cracking deal on a Mini 4 Pro Fly more and more and more. 
In short, Yes. However, there are some rules to follow. Head over to the Classified section and read the rules, then look at posting an ad.
oh ok I’ve just read those rules
For sale and wanted ads for drones and equipment.
Items may only be offered and bought by confirmed FPV UK members (those with an ‘FPV UK Member’ badge. This is because those members have successfully made a payment to FPV UK and so their details are verified, to some level.
Going by those rules then I should be good to go as I do have one of those FPV UK badges and method of payment is already proved and stored with the FPV UK shop
Cheers! Watch this space or the advert I am going to post with pics..
Did he say Fly More and more and more with not 3 but 4 batteries and lots of sets of new unopened propellers? WOW