online shopping in KSA?

www.souq.com/
This is a trusted website with registered website . So, you can also see the reviews for individual sellers .

What about shipping?, is it relailable to expect it to get it at home, or do you have to go pick it up somewhere, such as an aramex office?

Yes , they have a contract with shipping company which allow to receive all of purchases goods on time.

At home?

I still do all my shopping in the US considering the prices are amazing in comparison to the local prices, even with shipping cost.

I have an account with American eBox... its Free, they ship to the Middle East very cost effectively. They give you a US address for mail forwarding or package forwarding. FYI - the best way to ship and save enormously on shipping is to have them combine your shipments. I ordered a bunch of things from Amazon and Walmart... (mostly cosmetics) and they repack them into a single shipment, removing excess space and material. OH, they let you store your stuff for free for like 30 days so you can combine all orders made during the month. They ship straight to your door.

Check it out, maybe it makes sense for you guys. -
americanebox.com

Hi
could you plz tell me Is there any customs you pay for online shopping ? and what is the best courier you tried ?

Souq is definitely leading player in the market, but only buy items sold directly by Souq as a lot of sellers are actually selling fake products.
Wadi is a new entrant, so you might find good deals and bargains.

wait for noon online shopping to start, heard they will be amazon of middle east.
https://noon.com/

High Noon: Alabbar's plan to conquer e-commerce
http://www.arabianbusiness.com/high-noo … 54092.html

lots of employees from that company promoting...

Markavip and Souq are good sites.
I used adidas.com.sa and they were good but the returns was terrible.
In my opinion any customer services in Saudi is the worst i have experience in the world