Please find an updated, more concise version of this article by the same authors: Current market rates for scholarly publishing services – ScienceOpen
For many decades, the hyperinflation of subscription prices for scholarly journals have concerned scholarly institutions. After years of fruitless efforts to solve this “serials crisis”, open access has been proposed as the latest potential solution. However, also the prices for open access publishing are high and are rising well beyond inflation. What has been missing from the public discussion so far is a quantitative approach to determine the actual costs of efficiently publishing a scholarly article using state-of-the-art technologies, such that informed decisions can be made as to appropriate price levels. Here we provide a granular, step-by-step calculation of the costs associated with publishing primary research articles, from submission, through peer-review, to publication, indexing and archiving. We find that these costs range from less than US$200 per article in modern, large scale publishing platforms using post-publication peer-review, to about US$1,000 per article in prestigious journals with rejection rates exceeding 90%. The publication costs for a representative scholarly article today come to lie at around US$400. We discuss the additional non-publication items that make up the difference between publication costs and final price.
You write:
it's hard to compare costs relating to different quality and services
They all do what we describe in our paper: take a scholarly manuscript and make it public. Perhaps I can better understand what you mean, if you could provide me with, e.g., two representative DOIs of articles where you think I can easily see why one is worth paying more for?
I believe it's hard to compare costs relating to different quality and services; the companies/projects you refer to, are very different in nature, scope and almost none of them is a pure Publisher. The APC fee doesn't reflect automatically costs, or guarantees if a model is sustainable, as the eLife case you certainly know.