01First write down the parameters of the same exchange
The starting point for comparison is the asset and amount actually received at the order address, not the total amount deducted from the wallet. Write the sending asset, sending network, receiving asset, receiving network, amount, mode, and query time on the same line. If the receiving end differs or the sending platform deducts fees differently, you need to verify again.
For example, USDT TRON to BTC and USDT Ethereum to BTC use different sending networks; fixed and floating also include different conditions. They can be used to choose an option, but should not be ranked directly without explaining these differences.
资料依据：FeilongEX: current quote explanation ↗FeilongEX: exchange rate and fee terms ↗
02What two actual queries with the same parameters can show
On 2026-9-10, we queried the same floating exchange twice in succession through the local FeilongEX server quote interface: 100 USDT Ethereum → Bitcoin BTC. The following are two historical responses from the same service entry point, not a bid between two platforms, nor a completed exchange.
This time the two estimated received amounts were the same, while the returned minimum amount changed. This shows that even if the estimated amount is temporarily the same, the limits should be read again at the time of operation; daily fluctuations, minimum fees, or execution success rates cannot be inferred from two samples.
These two floating responses did not provide an API lock deadline, which does not mean that the FeilongEX quote page has no usage deadline. Before creation, you still need to verify against the page's current countdown and the returned conditions; this page deadline was not included in this historical record.
This table can scroll horizontally.
| Record field | Query A | Query B |
|---|---|---|
| Quote entry | FeilongEX server-side quote response | FeilongEX server-side quote response |
| Query completion time | 2026-09-10 12:02:23.803 UTC | 2026-09-10 12:03:24.913 UTC |
| Sending asset and network | USDT · Ethereum | USDT · Ethereum |
| Receiving asset and network | BTC · Bitcoin | BTC · Bitcoin |
| Actual quoted deposit | 100 USDT | 100 USDT |
| Mode | Floating standard | Floating standard |
| Estimated receive | 0.0012673 BTC | 0.0012673 BTC |
| Minimum send amount | 5.567352 USDT | 5.567439 USDT |
| The lock deadline returned by the quote API | No lock-in validity period was returned | No lock-in validity period was returned |
| The sender pays the fee separately | Not measured this time | Not measured this time |
资料依据：FeilongEX: data and observation methods ↗FeilongEX: current quote explanation ↗FeilongEX: 2026-09-10 anonymized quote observation data ↗
03Estimated receipt and external fees, each in its own place
The estimated received amount is the output of the quote, while what the sending wallet or withdrawal platform shows is the deduction for the deposit step. Do not subtract the same fee already included in the quote again, and do not directly call the difference between the estimated received amount and the initial sending amount the official fee.
When the sending fee is denominated in ETH or TRX, keep the original currency and amount. Only when a conversion value with a stated time and source is obtained should you calculate the total cost in a common unit. For a complete calculation example, see the fees and minimum amount guide.
资料依据：Ethereum: Gas and fees ↗FeilongEX: exchange rate and fee terms ↗
04After comparison, reconfirm whether this quote can be used
The historical query table is not a submittable order. The creation validity period of a fixed quote and the payment deadline of an actual order are different stages; a floating quote has no locked validity period and does not mean the price is permanently valid or that the order can be paid indefinitely.
Compare only the mode and amount actually returned, and do not infer a price that has not yet been returned from the label selected in the interface. When preparing to create, recheck the currently available modes, limits, and conditions; if you want to compare modes, go to the floating and fixed rate guide.
资料依据：FeilongEX: current quote explanation ↗FeilongEX: exchange rate and fee terms ↗
05Fee rebates are listed separately and are not deducted from the deposit in advance
The FeilongEX campaign refund is calculated according to order records or the fee quote rule and has completion and application conditions. It is not an instant discount at the time of ordering, and it does not change the amount that must be sent to the order address.
Before comparing, record "the exchange result expected to be received" and "the campaign refund after meeting the conditions" separately. The fee quote subsidy is not equal to the actual deducted bill, and address registration is not payment; for the method, see Refund calculation and application guide.
06Bring the comparison record back to actual operation
Keep the quote time, parameters, estimated receipt, and unknown fees; then confirm the fee and actual deposit in the sending wallet, and verify the asset, network, and minimum deposit on the receiving side. After conditions change, query again and do not reuse another order's address or amount.
Once the receiving network is ready, see USDT TRC20 to BTC or ETH to USDT Ethereum. If you have already paid, check the original order and do not pay again in search of another quote.
FAQ
Is the quote with the highest estimated receipt necessarily the cheapest?
It cannot be judged this way alone. You also need to check the mode, network, separately paid sending-side fees, validity period, and receiving conditions; when fees are missing, a complete cost ranking cannot be derived.
If two quote requests return the same result, is the price locked?
No. Two identical responses are only observations at those two points in time; whether it is locked is determined by the actual returned mode and valid order conditions.
If there is no quote from a second platform, can one be inferred for comparison?
You should not write an inferred result as that platform's actual quote. Clearly labeled teaching assumptions may be used, but real price rankings must not be published based on them.