What you're saying is that buying at market price on a decentralized exchange is the same, and the arbitrage bot raises your buying price. It's a bit ridiculous to encounter this kind of situation on a centralized exchange, so this exchange can be left; doing it this way is just like being on-chain.

You see how Sun is cutting. The highest price on Binance was 75, I bought it on Huobi for 92, I all-in 360,000 U, limit order to buy TRUMP, couldn't buy it. Market price purchase, adjust the price to 92 yuan for me. At the time of purchase, the market price was 62, all-in purchase successful, purchase price changed to 92.