Biopaw gift certificates make a great gift and they never expire. On the bottom of the checkout screen you will be asked if you would like the certificate emailed to someone else or to yourself. If you send to yourself you can print it out and use it as a gift.
If the recipient has a Biopaw account the certificate will appear in their account and on checkout.
If you wish to purchase more than one certificate you can add as many as you like with any denomination to your cart. Upon checkout you will be asked about the recipient of each certificate.