Amazon Prime Growth Stalls in US After Price Increase Inc.’s number of Prime members in the US stagnated in the first half of the year, suggesting a $20 annual price increase that took effect in February may be turning off potential customers struggling with high gas prices and inflation.

The online retailer had about 172 million members as of June 30 who pay yearly or monthly dues in exchange for shipping discounts, video streaming and other perks, the same as six months earlier, according to Consumer Intelligence Research Partners, a Chicago firm that tracks Prime members through consumer surveys.