Only in one review: In test 60 W (EBC-A20); Price 39 $ (EBC-A20).
EBC-A20: It works and meets its stated specifications, but accuracy is limited and the power stage is pushed to its limits.
Electronic load: The DIY load regulates current up to 5 A; current stabilization works perfectly as input voltage changes.
Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.