Has anyone been able to find someone who sells the $10 Re-Boost? I have visited 4 Sprint stores that are listed on the Boost web site as selling the $10 Re-Boost, as well as 3 non-company owned stores, and none of them have heard of a $10 Re-Boost being available. They all either sell only $20, $30, and $50 Re-Boost cards, or only deal in Boost Unlimited.
I found the same to be true in Minnesota where I live. I spoke to the customer service rep about it and she said they would be offering $10 re-boost on-line. I noticed today you could (pre)register your payment method for future reboosts and there is a $10 option now. I registered for it and will try it at the end of the month.