Not referring to the bonus from quality, talking about crafting level of the item. Such as if the recommended level for it is either +5 ahead of your current level, oppose to +1.

I've pulled off plenty of crafts giving me a return of 400ish on a consist base with minimal failures. Maybe 1 out of 20 crafts fails. If I aim higher than 400+ exp return, I take a bigger risk. I would need to pay attention more and take a bit longer to craft. That is out of my personal conform zone, but there are other people who do aim for 700+ exp on a consistent success rate, failing out of 1 out 20 crafts.

If I have pile of low level materials I just want to get rid of that still is worth at least 100+ exp each successful craft, then I would try to make use of them. However, anything below 100 exp is not worth my time or effort.