There are way better exchanges out there than that one.
Actually mercatox is new exchange and doesn't have their name to be known by most traders but mercatox has a good potential even though they're new exchange the volume is quite high. I have tried trading in it and it was 3 months ago the overall I can give a 6/10 but that was when their volume is lower but now I can say that with more people to support this exchange it can go head to head with famous exchanges.
I agree with your opinion that the marcetox exchange is still new and the volume is still low, but now I notice the volume of marcetox exchange has started to rise and probably will continue to rise.