Assuming you're talking about the Facebook app... If you buy a package for $10 for 100 million chip, you would need to spend another $10 for the bonus spin. You would then spin a wheel and when X amount (I think right now it's between 7 and 14x?). So for $20 you will get between 700 million and 1.4 billion chips. I'm fairly certain the amount of LP and VIP shields you get don't multiply.
Wynn slots now has a spin, too. Don't but chips now, so no sure what the spin entails. Would imagine someone on the FB group has done, though.
nobody has bought this yet? I'm sure it doesn't beat the 12M* credits + 100x reward + Piggy Bank for $99.99, but I'm still curious. *12M or 20M, not sure.