I have been killing fletcher and reloading in order for him to reset his inventory for literally 5 hours but a banish weapon hasn't come up once. I stumbled across a stormcloak camp after giving up hope and the quartermaster had an expelling bow (which has the enchantment), however, I couldn't get the funds together to buy it before her inventory respawned.

I'm on level 29 so I don't see why I've only seen it once and after going through so many refreshed inventories, when loads of people get it within five tries or so.

Is there anything else I can do to increase the probability of finding a weapon with the banish enchantment? Or is there a location/character level that is more likely to yield this?

ANY help would be appreciated,
cheers

Nope, it's completely random.

Unless you have the PC version and you're not above cheating. In that case player.additem be189 1 works just fine.

Well, I have never particularly ever looked for one, but in my understanding, farming this "Fletcher" may or may not be ineffective at lower ranks. Not sure because I haven't heard of him before but I am just giving my thoughts on the subject.

But I am sure I've seen Banish weapons before at Warmaiden's and from the two Orc blacksmiths in Markarth. Just visit any blacksmiths you may come across in your travels and they may sell them.

Gah! I'm on the playstation. I would definitely not be above cheating for the sake of this one little thing...

Oh sorry, fletcher is the shopkeeper in Solitude who sells archery items.