The Planetary Science Journal [1] is endorsed by the DPS.  All PSJ articles are open access as soon as they are published.  If you are a AAS member, you may be eligible for a publication fee discount [2]; if you are an affiliate DPS member and not a AAS member please note you will not eligible for the discount.  If you are unable to afford the publication charges, due to a variety of circumstances, you can contact the PSJ Editor [3] and request a fee waiver.

The DPS leadership pages include information about the PSJ editors [4].