PayPal in conjunction with eBay may put 21 day payment holds on payments for some eBay items. This can affect the cash flow of those who use PayPal to pay their drop shippers.
If you have at least 20 detailed Seller Ratings (DSR’s) with a score of 4.5 or higher for each rating, you will be less likely to have a payment hold put on the funds used to pay for an item.
More information about this can be found in the PayPal information link below:
https://www.paypal.com/us/cgi-bin/webscr?cmd=xpt/Marketing/securitycenter/sell/SaferPayments-outside