Interestingly, these do not seem to be sold @ Amazon any longer, though there is a single (color) unit available for $19.99. The reviews are excellent for this model; however, it greatly concerns me that reviews for the white light version are less than stellar.
IMO, these reviews are probably fake, as Amazon has become infested with false reviews by non-existent, paid reviewers.
If both models had had similarly glowing reviews. I’d have picked up 2 sets, but as things now stand, I can’t afford to take any chances on sketchy products.