This article is a commentary on McGill et al.'s (2020) article "Use of Translated and Adapted Versions of the WISC-V: Caveat Emptor." McGill et al. use caveat emptor in their title to indicate that the buyer of an assessment must be careful about the product being purchased, presumably because the seller of the assessment is not being careful about the product being sold, or at least they are not describing in detail the care they are taking about the product being sold. This commentary suggests both the seller (caveat venditor) and the buyer (caveat emptor) should beware, and the authors of the original article appear to agree that both parties should take responsibility, based on their appeal to test vendors to use a consistent framework for reporting technical information. [For the article by McGill et al., "Use of Translated and Adapted Versions of the WISC-V: Caveat Emptor," see EJ1254014.]