Phones with TikTok already downloaded are being listed for eye-watering sums as the social media platform remains absent from app stores.

Social media app TikTok briefly went dark in the U.S. last weekend due to a federal government tussle over its ownership. It’s since come back online, though the app itself cannot be downloaded from Google or Apple app stores.

Phones are going for thousands of dollars on online storefronts after Apple and Google took down ByteDance platforms.