I've dealt twice with Sialkot shop and twice with AS for different equipment for my club mates here in Canada. Till last year there was a little difference in shipping rates as Sialkot Shop used courier and AS used PakPost. So for a bat last year the shipping from Sialkot shop was around 25-30 dollars and for AS was around 15 dollars. But AS took 2 weeks whereas Sialkot shop took 4-5 days.
This year talking to AS I found that even PakPost is much more expensive. I am not sure whether it is due to them using volumetric weight or some other reason. They quoted $75 for a bat, 6 balls and a helmet which I think is very steep compared to last year. For Sialkot shop i got a pair of pads, a pair of spikes and a few skin layers for 65 dollars shipping through DHL for a friend. Mind you pads are always more expensive than bats.
At the end of the day I found shipping more expensive for AS which takes about 2 weeks than Sialkot Shop which takes about a week. Also Basharat bhai gave me the option to use PakPost and calculate the shipping but it was saving me only around 5 dollars. Another advantage is that although AS has good customer service they do not have the time to figure out alternatives and are not always available to answer your questions unlike Basharat bhai.