It seems Musician's Friend figured out that offering up to 20% off on something valued for the same as cash and may lead to a cottage industry on eBay for some users and they really wouldn't see the $20 per $100. So we bring you the Musician's Friend "Bonus Buck".

Here's the run down from their site:

Spend $100 on Gift Certificates, get $10 in Bonus Bucks.
Spend $250 on Gift Certificates, get $30 in Bonus Bucks.
Spend $500 or more on Gift Certificates, get $75 in Bonus Bucks.

It's like getting money for free!