I just did an order from Age Comfort and found that they're now doing free samples of their diapers, up to five pieces per order as long as there's room in the box for them. They do charge $2 per sample of the new Dry 24/7.

(It looks like they have reduced some prices, too - their bags of Molicares have come down several bucks each. They also do free shipping for orders over $50.)