I had a look at the https://arqma.com/ and the trade advice.
Citex - are they still doing arq?
Tradeogre : to buy = 0.00000058BTC
CREX24 : not allowed?
Bisq : who knows?? 0.000001btc? 

https://www.coingecko.com/en/coins/arqma : 24 hr $0.01148195 / $0.01405379 0.00000056btc