An advice:

In this moment Sjxcard priced in Sjcx is about 18% off than in Bcy (1620x0.00005638=0.0913btc vs 1200x0.00009=0.108btc)
[poloniex prices]

Check it:
https://swapbot.tokenly.com/bot/spellsofgenesis/sjcxcard-bot#choose