My experience with netsol's cert offer left something to be desired...
As the offerer, you are supposed to be notified daily on the progress of your offer. So, after 3 days of not hearing from them in regards to the offer I made, I emailed them, and only then did they make the offer! I don't know what the hold up was. With-in hours I had a counter offer from the seller, but the process would not allow me to counter his offer. It was just an accept/decline process. So I declined and contacted him via email with my counter to his counter, and he accepted. We then used Escrow.com to complete the purchase.
My $19 was completely wasted with netsol.