It was quite a while ago but ..
>How long do they take to deliver?
Depends if it's in stock, the first time I bought the item was in stock and it was very quick, a day or two max I think. Second time, when I bought my studio rack, it took a week or two because they had to wait for stock. It's always best to contact an online shop in advance to check if they have stock/ETA.
>Packaging and everything ok?
Yeah, was pretty decent. If you're buying something like a guitar, maybe check with them how they package that sort of thing. If you're getting something you suspect is very fragile, ask first.
>Was it couriered to your door or post office?
Door, I *think* the courier was RAM.
Drop them an email before you order and check their T&C and all that jive.
edit: What are you ordering?