This paper by Paul Peters, the Senior Publishing Developer of Hindawi Publishing Corporation, has been written for publication in the conference proceedings of Online Information 2006. Peters presents different open access publishing models and explains why so-called Big Deal journal subscription packages create a barrier to entry into the publishing market.

He explains that these packages are a barrier because only large publishing firms can offer a package with many different journal titles. In contrast, Peters favours the Author-Pays- Model which provides, in his opinion, a sustainable open access publishing model.