Scientific publishers' confidentiality clauses keep journal costs secret (!)

I did not know this. Crazy.

Controversially (and maybe illegally), when negotiating contracts with libraries, publishers often insist on confidentiality clauses — so that librarians are not allowed to disclose how much they are paying. The result is an opaque market with no downward pressure on prices, hence the current outrageously high prices, which are rising much more quickly than inflation even as publishers’ costs shrink due to the transition to electronic publishing.