Digitalocean is $5 and Linode $10 for the smallest plans. Linode used to be $20 for smallest, but upgraded their hardware and dropped their prices a while ago.

SliceHost was Linode's only real competitor at the time, they always cost more and gave you less. Rackspace bought them and the pricing pretty much stayed the same.

DO is cheaper but it's not quite the same level of product.

At the low pricepoints, Digital Ocean is better priced than Linode. But for more powerful VPS ( 6 Cores+ ), Linode does have better prices.