You can buy it at most convenient stores, like Walmart, Walgreens, Cvs, etc. You can load any amount on it up to $500 or $1,100 at Walmart, + a $4.95 fee. Seller than gives code to buyer and he adds fund to PayPal with the code. Max funding limit with moneypak is $250/ year unless you give green dot your SSN which limit then is $2,000/ month.
Also this:
Dear *********,
At PayPal we regularly screen activity in our system. A recent review of
activity on your PayPal Account indicates that you may have been
informally accepting Green Dot MoneyPaks as a form of payment. The Green
Dot MoneyPak was designed for the purpose of depositing cash in to your
PayPal account for retail purchases, not informal payment acceptance. We
ask that you discontinue using the Green Dot MoneyPak in this way.
Continued use of the MoneyPak in this manner will lead to limitations on
or closure of your PayPal Account.
We apologize for any confusion regarding the intended purposes of this
new feature. We hope that you will continue to use PayPal for both your
on and off eBay sales. Please feel free to contact us if you have any
further questions.
Sincerely,
Bryan
PayPal Compliance Department
PayPal, an eBay Company