[Beginner] One 0.05 BTC long on Bitunix, placed three ways: Market vs Limit vs Trigger

Same trader, same idea, same size: a 0.05 BTC long on the BTCUSDT perpetual. At this morning's last price of 79,985.5 that is 3,999.28 USDT of notional. The only thing that changes below is the tab clicked in the order panel, and that one click decides your price, your fee and whether you get filled at all.

The image is the live Bitunix BTCUSDT futures page from this morning with the order panel on the Limit tab: Market / Limit / Trigger tabs, order price, quantity, TP/SL box, Time in Force GTC, and the VIP 0 rates of 0.0200% maker and 0.0600% taker.

A) Market tab You type a size, not a price. It fills right away against the best offers in the book. Fee: 3,999.28 x 0.0006 = about 2.40 USDT to get in. Catch: the final price can differ from the number on screen when the market moves fast.

B) Limit tab You type the price. It fills only at that price or better. Placed below the current price, a buy limit waits in the book; if it fills from there you pay the maker rate. Fee if it rests and fills: 3,999.28 x 0.0002 = about 0.80 USDT. Catch: if price never comes back, you have no position at all.

C) Trigger tab Nothing happens until price touches your trigger. Then Bitunix sends the Market or Limit order you set up in advance. Example of the mechanics only: a trigger buy at 80,819.4, today's 24h high, would sit idle until that print. If it fires as a Market order, 0.05 BTC at 80,819.4 is about 4,040.97 USDT and the taker fee about 2.42 USDT. Catch: Bitunix's own guide points out that reaching the trigger price is not the same as getting filled. If the order it sends is a Limit, it can still sit unfilled when price runs past it.

Round trip, both legs the same type:

• Market in, Market out: about 4.80 USDT
• Limit in, Limit out as maker: about 1.60 USDT

Contract facts (Bitunix public API): minimum order 0.0001 BTC, default leverage 10x, max 200x. One Market order is capped at 120 BTC while one Limit order can be up to 1,200 BTC. Mark price at the time was 80,007.9, 24h range 79,468.3 to 80,819.4.

What beginners get wrong most:

• Using Market for every entry, then wondering where the fees went.
• Placing a buy limit above the current price and being surprised it filled instantly.
• Treating a Trigger as a guaranteed fill.

Try it: open the Bitunix BTCUSDT page, switch between the three tabs without submitting anything, and watch which fields appear and disappear. Then do the same on ETH, SOL, XRP or DOGE; the fields are the same, the contract numbers are not.

Worked steps for your first try

1. Open the BTCUSDT perp, pick your margin mode and leverage before anything else, because those settings shape the margin the order locks.
2. Type the same size into each order ticket so the only thing that changes is the order type. That makes the comparison honest.
3. For Market, read the best ask before you click. That is roughly where a long fills, and the taker rate applies.
4. For Limit, set a price at or below the current bid. It rests on the book, and if it fills it pays the maker rate. If price never comes back, nothing happens.
5. For Trigger, choose the trigger price first, then decide whether the order that fires is a market or a limit order. That second choice is what decides whether it is guaranteed to fill.
6. After any fill, check the position panel for entry price, margin and the estimated liquidation price.

Common mistakes

• Treating a resting Limit as a position. It isn't one until it fills.
• Setting a Trigger that fires a limit order for a stop. In a fast move the limit can be skipped, and the stop you were counting on never executes.
• Forgetting to cancel leftover orders after closing, so an old Limit opens a new position days later.
• Comparing fees without comparing fills. A cheaper maker fill that never happens costs you the trade.

Quick FAQ

Which one is cheapest? A filled Limit order at the maker rate, as long as it actually fills.

Which one is safest for an exit? A Trigger that fires a market order, because it trades through whatever price is available.

Can I switch type after placing? Cancel and re-enter. Check the order history so you don't end up with two.