The best alternatives to Book Flee are Luzme, ShopSavvy for Chrome, and PriceJump. If these 3 options don't work for you, we've listed a few more alternatives below.
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AssemblyAI— Speech-to-Text API with superhuman accuracy
Check the price automatically at over 30,000 retailers instantly when you visit any product. Know every retailer's price before choosing which to buy from. Important details like arrival date and estimated shipping cost are also shown, compare it all!
bbboookkksss offers book recommendations and prices on other e-commerce sites. Recommendations are based on content on tonality of reviews rather than collaborative filtering, allowing you to unearth great, not-so-popular ones. Available for US and India