When paying on our website, PayPal is our secure payment processor and handles the entire transaction. Your payment information is encrypted and transmitted to them using a secure channel and is never shared with us or even touches our servers. PayPal is a leader in high security payment solutions and you can read more about the process here: http://bit.ly/1Bm6GLU
When paying in person at our store, we accept US dollars, checks from established customers, and all major credit cards except American Express. We do not collect, keep, or store your functional credit card payment information - this way any risk to your information being compromised is minimized as much as possible.
We are required by the credit card industry to meet PCI-DSS compliance on a yearly basis; you can read more about it here: http://bit.ly/1Ab6m3w