You never heard of it doesn't mean it doesn't exist. Everybody get to learn something new.

0% APR is a teaser, but credit company do offer life time low interest balance transfer rate between 1.99% to 5.00% to card users with very good credits (760+) and very active credit history (people who use their cards for over $50000 to $100000 purchases a year).

Yes banks do make money in this way, because they get your balance transfered and you owe them money with an interest rate. As you can see, banks earn the inerest from you right? There's also something i should mention, if you exceed your credit limit or are late with a payment, you are gonna lose this promotional rate.