Eekaida said:
Don't know about Austrailian spiders, but I think camel spiders are pretty big
Camel Spiders aren't actually spiders but are another species of arachnid altogether.
Anyway yes we do get big spiders, but not the largest in the world (though possibly outside of South America, I know there's one rare species of Huntsman that rival some of the plates sized tarantulas, mainly in leg length though).
Huntsmans are monstrous things that are about a weekly occurrence in most homes near any sort of bushland (i.e everywhere but the desert and the middle of cities). They look like demons and I suit up in full battle armor equipped with a +10 spider slaying broom. There's more than a few other spiders that are very common that can be close to palm sized. One type are the Golden Orb Weavers and these fuckers tend to live in colonies. In my back yard there's a stretch of grass that is corridor like from the trees. These guys get about 20 of their buddies and go nuts spinning a web that basically cocoons the whole area - it is literally Shelobs Lair down there and hasn't been accessed by man in several years. Luckily all these demons are harmless to humans.
The ones you need to be worried about are the Funnel Webs, Red Backs and possibly (though highly debated and possibly not harmful at all) White Tailed spiders. Funnel Web Spiders are modest in size, but have battle armor and harpooned sized fangs, Red Backs are pea-sized and White Tailed Spiders are pretty small too. It sucks though because all three of these spiders live smack bang in some of the most densely populated areas of Australia. I've dealt with probably 20 of these all up in my lifetime, but others have it far worse with 10 or so a year.
The worst part is I am very scared of spiders and even though I am always the one to deal with them in my house (I've gotten rid of countless huntsmans) it has never got any easier. I'm always there visibly shaking with a big ass broom trying to get these things that run so fast they can almost teleport. I've even been ambushed by them (ran under the door) while on the toilet and while driving (the palm sized fucker ran across my dashboard, which nearly made me crash), some of the worst experiences of my life.
Edit: A funny video that literally depicts what I have to deal with every week (though I kill the bastards)