On Price's use and abuse of the criterion of dissimilarity:
Price takes up the early form-critical observation that for the Jesus tradition to have been preserved it must have been of some pragmatic value, and he uses it to make the criterion of dissimilarity "all devouring." If every bit and piece of the Jesus tradition had a home in the early church, then "all must be denied to Jesus by the criterion of dissimilarity." Such an extension of the criterion of dissimilarity simply undermines what value it has. It is so a priori obvious that an influential teacher's teaching would influence his disciples and shape their own teaching and lives in substantial degree that the dissimilarity criterion does not help us to distinguish the one from the other.
James D.G. Dunn in The Historical Jesus: Five Views (IVP 2009), p.95James Dunn on Price's use, or lack thereof, of primary sources:
Yes, the question in your head is "why are you bothering with an idiosyncratic Christ Mythicist?" Well, such views seem to be believed by laymen with a polemical agenda against Christianity.
Where I begin to become irritated by Price's thesis, as with those of his predecessors, is his ignoring what everyone else in the business regards as primary data and his readiness to offer less plausible hypotheses to explain other data that inconveniences his thesis. Why no mention of 1 Corinthians 15:3 - generally reckoned to be an account of the faith that Paul received when he was converted, that is, within two or three years of the putative events - "that Chris died...." Why no reference to Paul's preaching of Christ crucified (1 Cor 1:23), his preaching as openly portraying Christ as crucified (Gal 3:1)? How can Price actually assert that "we should never guess from the Epistles that Jesus died in a particular historical or political context," when it is well enough known that crucifixion was a Roman political method of execution characteristically for rebels and slaves? I could go on at some length - "seed of David" (Rom 1:3), "born under the law" (Gal 4:4), "Christ did not please himself" (Rom 15:3). Yet Price is able to assert that "the Epistles...do not evidence a recent historical Jesus," a ludicrous claim that simply diminishes the credibility of the argument used in support. (p.96)