Question: Is there an app that allows me to shop more sustainably by finding discounted prices on secondhand products?

If you want an app that'll help you shop more sustainably by locating discounted prices for used products, Beni is a good option. Beni is an AI-powered shopping assistant that scrapes resale deals from more than 40 sites, offering a browser extension and mobile app. It lets you compare prices and find used alternatives to new products while you're shopping, and it works on more than 2,000 e-commerce sites, including Gucci and Target. Beni is free to use and makes money through affiliate marketing, so it's a useful and cheap way to shop secondhand.

Another option is SayF, a mobile extension that uses AI technology to automatically detect and apply the best deals, coupons and discounts from more than 1000 brands. That includes e-commerce sites like Amazon and Flipkart, as well as brick-and-mortar stores like Reliance Smart and Croma. SayF consolidates deals in one place so you don't have to hunt for them, and it can save you money by automatically applying the right discounts. That makes it a good option for people who shop a lot and buy from multiple brands.