That's not a surprise at all. Most people cherry pick what they want and aren't really interested in bulk outside of lands or x4 sets. And don't try to sell to a Card shop. Physical or online. They won't give you crap. Your best bet is probably just ebay or on here to people with good rep. Now I could be completely wrong and more might have better options that has just been my experience through selling/buying and what I've seen. I'd even be hesitant to use Magic/Card forums or craiglist just because it's easy to get screwed without a security system in place.