Bought a pair of oak barrels on ebay. Then went back and bought an extra one. PayPal have blocked the first payment but allowed the second one.
Their help page says "
As a security measure to protect our sellers, we review potentially higher-risk payments. When this happens, we place a hold on the payment within minutes of it being sent and ask the seller not to deliver the item, or service, associated with this payment. The payment will appear as Under Review in the recipient’s account."