I didn't know that:) In the Life sciences, we tend to pay. We also publish images which are very costly. We have one publication that is going to cost us around $3k to publish as it has a lot of microscopy images.
I don't work for them (in fact, they could be considered a competitor), but check out PeerJ. $99 per author for an article. PLOS ONE also has fee waivers if you really can't afford it.
Is there a legitimate reason why scientific journals still produce dead-trees versions? Why not just publish PDFs? The reader can print if he really must.