I suppose this depends on the country…
AliExpress sellers tend to ship via registered mail (postal office), or untracked for very cheap price items. Our country’s post office will always collect a fee (around US$2-4) from recipient upon delivery of item, even if the item is just a $1 item).
The post office system (to our country) can be fairly fast (around 2 weeks is the fastest I’ve experienced, but on average 4-8 weeks, and in rare occasions, several months. The longest was around 9 months, this happened only once, when pandemic occured last year, I suppose this was caused in part by various countries’ postal system getting closed though and the postal routing was messed up, anyway it was a low value item, less than $10, and I actually already made a dispute to AliExpress when around 5 months had passed… not expecting the package to arrive on the 9th month.)
For Banggood, usually there is a third party courier which delivers door to door, and is almost as fast as expedited shipping (nearly as fast as DHL / Fedex), around 9 days is the fastest I’ve experienced. There is no fee to collect when using this courier (for Southeast Asian countries). Although Banggood will require a minimum amount (used to be around $30 to have “free shipping” using this 3rd-party “Southeast Asia” courier system). If below the $30 spending on BG, then this shipping method will incur a shipping fee of less than $2, which is still reasonable, considering it’s fast.
So, when I compare the two options, BG items generally arrive much much faster as long as they ship immediately. Whereas AliExpress will take a long time to arrive (due to using the slow postal system)….
But anyway, back to the main topic.
Ordering directly from Simon’s Convoy store may sometimes be a bit more expensive than BG (with discount code), but as mentioned by others, there are more choices (and sometimes, if the choice is not there, can sometimes request Simon to make a customized option, eg. LED not listed in a certain flashlight, but is usable, then Simon can make that available for the buyer). And if there are any issues, Simon will try to make things right.