You may but oats before they go into the horse....and you may but oats AFTER they come out of the horse.......THE PRICE...and what you get are somewhat different. Jeff long will describe the 8005 juicer they make ....or call at 1-800-633-6301....A real person answers the phone. PLUS the Omega is rated for COMMERCIAL and domestic uasage. with a solid 10 year warrenty. I have beeen a commercial wheatgrass grower for the past 9 years....It is the ONLY juicer we sell. GREAT extraction....very reliable.