Jute was very hard to find for me, but when I found 1 I usually got 2-3 other nodes near it. As for iron and raw hides, they are very common thanks to double iron nodes and the drop rate in fungel grotto.
Set the price you want, and when you say it in /z at the end state "or highest pm bid"
I find Jute all over,and you can make a lot of money for all that you have mentioned.I more than doubled my gold in two days with them.Mind you it took a day to sell them,and I didnt relog in for that long.
Also Insect parts by the stack on 200 are worth a bundle.When you go to sell them there will be a common pricing as you list them.Charge that or more if you like.I use that base price though usually.