Well, this is just a road-side example.

Help, please.

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No, it makes no sense.
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Then, perhaps crude example would make more sense. Right?

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I think that is a little extreme. I like 'rough' better, but I think the most common phrase is actually 'quick example', where 'qui ck' suggests quickly thought of, hence not necessarily well-considered.
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Thank you, Mr Micawber.

Jackson6612 Well, this is just a road-side example.

I've never come across the expression. Do you take it as something which is found to be lying beside the road, or something which is sold at a "roadside stand," and is perhaps homemade, as opposed to factory made? I realize the reference is figurative.

As an aside, "to refine" is a verb. The adj

Avangi As an aside, "to refine" is a verb. The adjective (or past participle) is "refined." It may exist as an adjective in its own right. (I'll check the dictionary.)

Yes, it does.