Your friend in a big dangerous ! His nickname on Steam:
LegacyShadow
Someone trying to buy his BUTTERFLY SAPPHIRE ! And someone asked HIM to make his profile friends only!
Tell him to make profile public and open friend list , because legit traders can warn him about scammers and legit traders can help him !
Also tell him to remove this scammer who asked him to make profile friends only !
ONLY YOU CAN HELP YOUR FRIEND !!! THANKS !