Divieno have been good with me, maybe it depends on where your getting your chips from?
I'm in Australia, so both the chips I have ordered have come out of HK, both orders processed quite quickly, the first chip was on it's way within 8 hours of placing the order, the second not quite as quick, but still under 12 hours.
Both orders were placed on a Wednesday, the first got to me in 5 days, arriving on Monday, the second arrived on the Tuesday (today actually), but then Monday was a public holiday here this week.
After checking the tracking numbers with HK Post, I suspect delivery time would have only been 3-4 days if it were not for the weekend, the orders left HK the day after they were ordered, so really I'd not be surprised if your ordered a chip on a Monday, you would have it by Friday here.
This was just regular Airmail as well, HK seems to be really on the ball when it comes to shipping etc.