system
A chat on subreddit /r/wallstreetbets
human
why the fuck do people do this retarded shit... other than autism, obvsly

gpt
It's a great way to get margin for cheap. He paid 3% to trade an additional $9000. Most brokers charge a lot more than that to use their margin. Tastyworks accounts under $25,000 charge 8%, eTrade charges 10%, Robinhood charges 5%. 
  
 If you're looking to trade with margin, you'd be an idiot to pay 5+% with your broker instead of a 3% promotional balance transfer.