The handling fee is the silent scythe of leeks, and rebates can save a lot.
Many people have been trading in the cryptocurrency world for years and have never opened a rebate.
Contract handling fees can easily reach 0.15%, especially with high-frequency trading. Even if you only earn a few dozen U on each trade, the handling fee quietly eats away at your profits.
The rebate I am currently using can save quite a bit on handling fees. Don't underestimate this; over time, it adds up to substantial earnings.