I don't think organic means it's cage free necessarily, and vice versa. organic means organic feed for the hens, which means producing more enriched eggs, more vitamins, no hormones, and no melamine in the feed.
cage free/free range means the hens can walk around and feed outside. the conditions for regular egg laying hens are pretty cramped, stressful and cruel. I don't really want to go into details here, but i found out a few disgusting facts for eggs and chicken meat processing on a peta website. apparently it's even terrible for the people who work there.
a box of free range eggs normally runs me about $5-6 CDN, whereas regular eggs are around $2. I often get enriched eggs instead which are around $3