It was an option that's now unavailable.

Sorry, we're all full up on that as that puts a strain on the co-op leaders finances as we have to float PayPal shares for 1 to 2 weeks (and it was still costing us a few bucks per transaction).

Companies like Square and PayPal see the Bitcoin protocol as a threat. Instead of using this protocol to save money for customers, they'd rather be run over by the Bitcoin train while they stuff their fingers in their ears and close their eyes tightly, wishing it would all go away.