Valid & Invalid transactions

Q: 

1. If a customer was to order something that the business didn't own (it wasn't in stock) and rather than paying full price on it, they agreed to put a deposit down and pay full price after the product was delivered to their house and it was fitted into their house (fitting is a separate service and a customer can order a product and request fitting it into their house or they can order a product with the fitting service together). 

Would the income be halal for this? The product will be delivered to the shop first and then the business will send the product to the customers house and fit it. 

2. If you tell a customer that the product isn't in stock and they have to order it in and if they do, they don’t have to pay full price, rather just a deposit and then when the product is delivered to their house or ready to collect from the businesses store, they can pay full price after that, is the income halal?

Q: I bought airtime and put it in my phone. I used the airtime to buy a bundle of data. I never notice my airtime was fifty cents less. They charged me an emergency recharge. They gave me R2 and said from my next airtime they will take R2+R1.10 access fee. What must I do at that time? When agreeing, I never know it was interest but after that I sensed it. Please advise.

Q: I have a start up that will sell products online in the U.S. I have made small 3d printed stars for use as fridge magnets, but they also can be hanged as a decoration. It is Christmas time in the U.S. and a lot of decoration sales are made during this time. 

I have not made a product specifically for Christmas, but my product may be used as a decoration on x-mass trees. I can make a product listing on my online store and add "tags" that help customers find my product. Is it okay for me to add a "christmas" tag to my product, so that it appears easily in searches and attracts sales?

Q: I am selling physical products on an online website. I had one product in stock, but got two orders for that product. Now, I have two options: 

1. Manufacture the extra product to fulfill both my customers orders. 

2. Buy the extra product from elsewhere and then get it shipped to my customer. 

Are these options halaal? I know that dropshipping is not allowed Islamically as the seller does not own the product at the time of the sale, that is why I want clarification.

Q: Many online platforms such as Takealot, Amazon, Wish, Temu, Shein, etc. sell products which are not owned by these companies or sometimes not in the ownership or possession of these companies. Will it be permissible to purchase from these sites?

Q: 

1. A dealer purchases cars from auctions. Payment is made for these vehicles and the dealer has possession of the vehicle. However, the auctioneers generally delay paperwork and release the logbook, etc. months later. Can the dealer sell the cars before receiving paperwork? 

2. A person purchases a property but does not have the title deed as yet. It is still being processed with the master's office. Is he considered as the owner? Can he sell the property? Can he rent out the property and receive rentals?

Q: A vehicle was purchased on HP (hire to purchase). The bank still holds the log book. Is the purchaser considered to be the owner? Can he sell the vehicle?

Q: I own a butcher shop. When we weigh the meat, we weigh it with the plastic and the tray, and we charge him accordingly. Is this fine?

Q: 

1. I sell products from my business website. My supplier has 200 products. I stock 100 items but list all 200 items on the website stating 'available on order'. The customer purchases and pays for the item and I then order and ship it to the customer. Is this permissible? 

2. I post items on my WhatsApp for sale... Customers know I don't have the product. The supplier has numerous agents like myself who advertise and purchase according to order. Customers place orders and once I receive the item, they pick up and pay. Is this permissible or how can this be structured in a permissible manner?

Q: I get many customers who are either semi-drunk or completely intoxicated. Will it be permissible to sell to them?