In reply to Phillip Lord.

Those costs (not a single tool chain) are hard to estimate because they include one-off development costs (but people are working on a lot of that at the moment) costs of running that system, which will be different to current costs in some places (including some new QA steps) and also the savings (which are the easiest to pin down probably, production is ~$200 per article, format mangling probably averages out - pace my comments about this being a long tail problem - at ~$150 over all articles, and then data migrations across systems, probably ~$100)