Update economy.py

Check cardset availability for /buy

cogs/economy.py

@@ -675,6 +675,12 @@ class Economy(commands.Cog):
                          params=[('player_id', this_player['player_id']), ('team_id', owner_team["id"])])
         num_copies = c_query['count'] if c_query else 0
 
+        if not this_player['cardset']['for_purchase']:
+            await interaction.response.send_message(
+                content=f'Ope - looks like singles from the {this_player["cardset"]["name"]} cardset are not available '
+                        f'for purchase.'
+            )
+            return
         if this_player['cost'] > owner_team['wallet']:
             await interaction.response.send_message(
                 content=None,