Question: Is there a Minimum amount of SBD you need to send to Blocktrades? 30 SBD + Recommended

I tried to send 5 SBD to Blocktrades to convert to Bitcoin ... and received the following Error Message:

Transaction State : permanent_output_failure_input_too_small

Is there a minimum amount you need to send to Blocktrades ? Do I ever get back my 5 SBD ?

Is it lost forever ?

@Blocktrades I could not find an answer to this Question on your Website or on Google.....

Thanks for your help.

Update: 42 minutes ago Receive 5.000 SBD from blocktrades refund by admin

But I still don't know if 5 SBD is too little ????? Anyone know ????

Update: From @blocktrades · 44 minutes ago
I've manually refunded it. With current bitcoin transaction fees, I recommend transactions of 30 SBD or more to get an acceptable rate (and more is better).

Now we know .....