Because it seems like i cut willow trees forever and only get like 2 logs.

Yes you will get logs at a faster rate as your woodcutting level goes up. Your axe also affects this.

At about 60 with Rune Axe your speed of cutting Willows will vastly improve.

I am lvl 43 woodcutting with a steel axe and can't afford a better one, so should I still train on willows or should i do oaks cause i cut them faster?

Good question but I suggest you just try to buy an addy woodcutting axe then (only 2-3k) by selling some of your willow/oak logs.

Everyone i ask to buy says that they are 10k...

Adamant axes are indeed about 10k on the street, and rune ones are 20k.

 

 

 

As to your question about what you should do, you should probably drop back to Oaks and save them. You can sell the oaks for 30-50ea (typically lower, however) to those working on construction. To get a Rune Axe, you'd need to cut, at most, 800 Oaks (25ea). After that, you should probably stick with Oaks until you have at least over 70wc, then you'll start 1-hitting the tree for logs quite often (look at my level, I still don't get constant 1-hits on the tree, however I do get them relatively often).

And where would be a good place for cutting oaks that's near a bank?

draynor vilage 2 the left by the market is a oak tree no 1 uses hope that helps