$4.99 vs. $5.00? And what do you call your premium memberships?
noodle: the only practical reason to price something at $_.99 that i can think of is to keep yourself in a lower payment processing bracket.for example, amazon flex pay charges one rate for below $10, and another for $10 and up.  the difference isn't large, but keeping a charge at $9.99 instead of $10 ends up netting you a few extra pennies, instead of losing 1.