One more certificate of reliability from a long time paypal user, me....!!

It is reliable.., but of course, as with any online transaction, take all the necessary safety precautions, like not using cafe PCs, making sure the password remember option is off, etc...!!
and with regards to ebay, the paisa pay option there is a very good feature.. Unless you confirm receipt of the product you ordered, the payment is not released to the seller..!