An enjoyably snarky TTRPG that delivers on a fun premise. The random tables for developing your contract's clause(s) and subclause(s) are pleasingly detailed and silly, while the range of powers span from the expected to the bizarre. The rest of the mechanics seem quite straightforward and fit for purpose. The full-colour illustrations look good and are well suited to the material, which is a nice bonus.
A major downside is that there is only one version of the PDF and it's not very accessible or printer-friendly. Many of the tables have black text on a fairly dark brown background, which I found difficult to read, and some of the typeface choices prioritise style over legibility. This is the caveat that prevented me from rating it 4/5 stars - if the creators add alternative versions to solve this, I'll happily amend my rating.
Given the game's tongue-in-cheek tone, your mileage may vary depending on how seriously you take certain elements - for example, casual mentions of a dystopian setting ruled by Satan and misfiled paperwork somehow granting a player 'the power of Christ' (with a breakdown of potential uses spanning three power levels) may not go down well with some kinds of Christians. Brief mentions of forced sex work and parallels of real-world injustices (such as wealthier nations dumping toxic waste in less economically developed countries) might put off a wider range of players, though at least it's in the context of satirically invoking real-world problems.
Overall, Bargain Bin Warlock is inventive enough to successfully fill a niche that will appeal to a fair few people. It's just a pity there are some accessibility issues with the current design. 3/5 stars - enjoyable.