Alex Wu runs TradeSavings. He trades on several of the exchanges and brokers listed on the site and writes about perpetual DEXes and trading costs on X as @OnchainU.
He checks every code on the site by opening the exchange or broker sign-up with it, and keeps the fee tables, the add-later rules and the Ask answers in line with the platforms' official pages. Our methodology page explains how.
Contact: alexwu@tradesavings.io or the contact form.