I have had stuff in under a week, just not very often. I seem to remember 5 days as the record.
On the whole, I find them a lot faster than anyone shipping from the Chinese mainland. I suspect that HK Post uses the bulk mailed stuff for "load leveling", so if they are quiet stuff gets shipped really quickly. They also seem to try to get stuff shipped out in a hurry before Chinese New Year - but if you miss that, your stuff can lie around for a long time before it gets sent out.
Ordered some stuff from dotlight.de. the postage was more than the items I'd ordered - total of 18 euros, 10 of that was shipping but it was dispatched Monday morning and arrived Wednesday afternoon which isn't bad at all. OK, Germany is a lot nearer.
But DX isn't in my good books just now after the Uniquefire thrower episode.
The "record" from DX to Hungary 7 days. That means 5 days after the shipping date (ordering-packaging-shipped). This package contain only 18650 batteries. Usually 10-14 days. From DX to me: 70% 10-14 days, 30% chaotic.....:P Wrong item shipped because the sku number similar.... The product page say: "Typically ships in 4 to 7days" wehehe bad joke:o)))))