>>5906542you determine it via an 'explanation' and price tag. no way to do so on looks alone.
if you mean the actual art, then use observation and what you know about art. try not to be too normative and learn to appreciate more beyond obvious technical proficiency in isolation. it is also somewhat down to what you see in it. people have different tolerances and find different things interesting.
>If something seems low effort, is that necessarily a bad thing?yes it's a bad thing. but you may not be able to see their effort if you are noticing blatant shit you don't like or see is unskilled.
