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Isn't that amount paid for you per article is low compared to the usual rates that a writer asks from their clients? or that rate is typically from publish0x and not direct clients? It is true that blogging is still good but it takes time before you're going to get a good traffic. From what I've heard, the usual time needed is a year.
the rate for my website:
compared to the first-world countries, yeah it's really low.
I saw some users here offer $3-$10 per 100 words. and it's for writing service only.
the rate on publish0x:
$2-$3 per article based on publish0x rewards, not from the client's side.
for a copy-paste job (micro-task), I can take that rewards

also, they paid in ETH, BAT, LRC, FARM, and AMPL, which means that penny rewards have been already pumped.
yeah, it takes time to receive good traffic.
but it depends on how useful is your article and how you tweak your blog.
at the first time, I bought some edu domain backlinks to increase my domain and page authority.
it will help you to rank better on search engines.
this is my publish0x dashboard.

this is my coinzilla dashboard

it's not that good yet, but if you could manage 2-3 blogs, it will be great.
let say this blog is my small mining rig, because I am a passive blogger.