The are not sold separately, and I am contemplating buying new high chairs just to get different covers. (albeebaby.com)
Their products are well thought out, ahead of the curve and modern so it's no surprise that their brand new high chair is one of my faves from the show! (simplyrealmoms.com)
This is not only convenient, it can help you save money by not having to buy new high chair each year. (babygearspecialist.com)