.CO's are hard to sell.
I invest in them since sunrise in 2010 and I finaly just sold 2 of those this year!
Cider.co is a great domain name. If you look at your favorite registrar, you will notice that the word "cider" is taken in a lot of tlds.
.CO is getting stronger this year. Unfortunately you may not have more than 1 buyer for this .co domain name. I suggest that you list it on Sedo.com and set a minimum offer of $1,500 and take the first offer to come. You may also have to pay renewal fees forever before there's a buyer show up. Don't hold a lot of .co's but few great ones like this!