Both Wasabi and Ginger clients aim to avoid generating 'change.' In other words, all coins should be consolidated into specific denominations (those values that are generated by all clients). This means the difference should stay below a certain minimum output amount, which is set at 10,000 satoshis for Ginger. (It’s widely believed that change negatively impacts privacy). However, this can become a significant issue if the client can only participate with low-value coins.
If only a small amount of money remains, it’s advised not to coinjoin (this applies to all clients), as you'll lose an average of 3-5k satoshis per round on top of the mining fee. There's almost certainly no coordinator fee involved.
The mining fee can be calculated, but in an environment with a rate of 3-4 sat/vbyte, it shouldn't be a major expense by itself. The vbyte is roughly 70 times the size of the input coin and 30 times the size of the output coin, and you multiply this by the mining fee. At a rate of 4 satoshis, the cost will be around 3,000-4,000 satoshis (independent of the client, assuming an average number of input/output coins).
I used GingerWallet with their default gingerwallet co-ordinator because I wanted to know how much time the coin join took to reach 100% and wanted to check the fees incurred.
Ginger Wallet via their co-ordinator are supposed to take fees of 0.3% for deposits that are 0.01 BTC and above, the rest are supposed to be mining fees. In my case, the total deduction when it reached 100% was significantly higher than I expected and the time it took to get there was in double digit hours.
Rather than use a calculator to work out 0.3% from the actual deposit and then assume the difference from the balance is the mining fee, is there a simple way to categorically ascertain how much of the deduction is the co-ordinator fee and how much of it is the mining fee?
Apologies if any of your questions have gone unanswered. What are they, and how can we assist you?
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