From your post I understand that you want both an air rifle and an air pistol(match grade), do correct me if I am wrong in my presumption.
If you want a second hand(lets just say pre-owned, sounds a lot better

)rifle/pistol, your best bet is shooting athletes who are selling off surplus or older equipment. You can post a wanted ad in the wanted section to begin with. There may be athletes on this forum who are selling.
The membership card comes into play when you import from abroad. However, if you are able to source your equipment locally via networking, that may not be required at all. Please ensure that you actually look up and test the pre-owned rifle/pistol you are intending to purchase. Namely check for any visible defects, shoot a few groups from a rest to see if the groups are consistent; etc.
regards

OUP
The universe was born with a BIG BANG, no wonder guns run in my blood.
Disclaimer: My post is either a question or a reply to one. I am stating an opinion. If my opinion differs from yours, It's not intended as an insult.