Ok, /biz/ err /sci/, Im retarded and want to get right into options before even understanding how all this shit works.

Also trading is math and since /biz/ are retarded, this vaguely fits here on /sci/.

Yeah, I'm fucking stupid.

Anyhow, I want to sell a put on quantas.
I think it wont fall tomorrow, so I should keep the premium.
but if it does fall, I dont mind buying it at the strike price.

Questions:
Why the fuck do I have to add a price limit?
I though option contracts were obligations to the seller?
Also, the bank and ASX will keep the fees even if the contract doesn't get sold, right?


Also, is there a better way to trade than directly at my bank's website?
I was thinking eToro..

Aussie shitpostah here btw

P. S. pls have mercy on me jannies, warn me and I won't do it again.