Various masaail of trade

Q: Is Forex trading halaal?

Q: There is a website called freelancer.com , where a person can hire graphics designers, website designers and the like, to do work for him. One option available is called a contest, where one posts ones requirements and the price he will pay, the money is charged by the website, then various graphics designers who want to offer their services (optionally) create mock ups / designs which the person can then choose between. Sometimes over 50 different designs are made. The person then chooses the one he likes the most. The website transfers the money to that designer, together with taking a small percentage fee for using their platform. The one designer who's design was chosen, will be paid. The remainder who's designs weren't chosen, and had voluntarily posted designs in the hope of winning the contest, get paid nothing. Is this type of contest / ijaarah permissible?

Q: I bought a plot of land with terms of 18 months, but due to some reason, I could not pay the full amount on time. The seller is now saying that since I did not pay him the full amount within the time period, he will cancel the deal, unless I pay him an additional amount. Does he have the right to do this?

Q: I wish to inquire further regarding Mufti saabs ruling of installing atm machines on one's premises. Will the same ruling follow a card machine facility, with which many benefits exists but a customer may also pay with a credit card from haraam funds(interest bearing loan / overdraft, etc.)?

Q: Someone owns a shop. Because people often ask for discounts, they mark the items higher, so when people ask for discounts, they give it and still get their desired profit. 

Eg. He wants a profit of R50 for a R100 item. However, knowing that people will ask for a discount, he marks the item as R200. So when people ask for a R50 discount, he gives it to them and still gets his desired profit. Is this permissible in Shari'ah or is that money haraam?

Q: Sometimes a few items in a batch of stock are slightly damaged. Do we have to tell the customers about the damage before selling the items to them?

Q: I purchased 3 abayas from a lady online. All 3 turned out short even after giving measurements. She tried to fix them but changed the look of the abaya I ordered (it does not look like the original picture). When I received it, they were dumped in a bag. When I called her to say its a slim fit and short and I cannot wear it like this, she asked where her abayas were, to which she responded "oh god". She said her abayas are tailored so it will seem short irrespect of my size, so couldn't she inform me of this? So I could then say... make it bigger, looser and longer as I am in niqaab and cannot leave the house with immodest abayas. She then says why I didn't tell her I'm in niqaab. Being in niqaab or not doesn't matter when purchasing an abaya. I want to send them back to her but she is ignoring me and my messages and refuses to send me her address. The abayas cost R3049 and she doesn't seem bothered that her customer isn't happy. I mentioned that I'm not asking for a refund but that she takes the abayas back and give me the correct sizes but she refuses. Please advise going forward as I havent been rude to her at all but shes been abrupt and not accommodating.

Q: Is it permissible or impermissible to open a restaurant in a casino?

Q: If a person gives his word to someone regarding a business matter, no legal papers were signed, are you allowed to cancel it Islamically?

Q: Recently, while in a supermarket, I picked up a bottle of detergent and placed it in my trolley to purchase it.

A few minutes later, I saw that the bottle was leaking as the lid had not been screwed on completely. Approximately one quarter of the liquid had leaked out.

I left the bottle on the shelf, paid for my other items and left. It thereafter occurred to me that when I had picked up the detergent with the intention of purchase, I became liable for it. However, either the manufacturer or supermarket had not screwed the lid on correctly, and that was not my fault.

Am I responsible for the item? Should I return to the store and compensate them for it?