Edit: cornix and a viable channel that accepts it can be quite expensive to start with depending on what expensive is to you - cost about 0.05-0.2 a year. The most expensive isn't always the best.
This is what it came into my mind also, trading bots will cost a lot and I am not sure also if they are effective. Though I can afford it...
I was more on the idea you'd have to receive a return that size which would probably take around 0.5 with a few dedicated agents.
I haven't looked at those bots also but theirs might be hosted by them (the rest won't be) so you MAY have server power to pay for unless you get an rpi.