What is a Jill Lynn & Co Gift Certificate? The Jill Lynn & Co Gift Certificate is redeemable for Jill Lynn & Co. merchandise up to the prepaid value of the certificate. Available in denominations from $50 to $500. The Jill Lynn & Co Gift Certificate allows the purchaser to share with their gift recipient the experience of shopping at Jill Lynn & Co. To purchase a Jill Lynn & Co Gift Certificate, choose a value and add to your cart. There is no tax charged up front on the purchase of a Jill Lynn & Co Gift Certificate. However, tax applies to purchases made with the gift certificate as with regular purchases. Jill Lynn & Co Gift Certificates are packaged and sent by standard shipping