Yes you can send cash but it's risky. This is the busiest time for the Post Office and letters and packages do get lost. Better to get a Postal Money Order and safer too! Good Luck! I would advise anyone who does bidding on items frequently to open up a Paypal Acct. It's the fastest and safest way! And it doesn't cost anything to open one up. And doesn't take very long at all to do it.:)