I came across them on eBay first as sinedya (I think this is them not a dropshipper), they have the cheapest price for 18650 boxes/containers/cases that I can find, 8 for $3.97 including shipping BIN. (Dealextreme are $1.98 for 2 and even with bulkrate if you buy 4 of those it's something like $7.50 all up.) Sadly they don't ship worldwide in particular they don't ship to NZ. I tried asking them but they claimed lots of items go missing (I have my doubts, I suspect they just don't have enough experience so are presuming items may go missing, they probably have no idea where NZ is or whether we're different from New Caledonia so their staff are instructed to parrot the claim that items go missing) but I can buy from their webstore buyincoins (which is almost definitely a violation of eBay policy).
I was going to buy from xiao2huan on eBay who is one cent more expensive but did say they'd ship to NZ when asked. But I looked thorough their website and then did an internet search and found that there is one 10% off coupon, see http://www.retailmenot.com/view/buyincoins.com for example.10%off2010 works currently, the name would suggest it's supposed to last thorough 2010 but who knows. 10%offeBayer seems to be expired, no idea how long it lasted.
These only work once from my own testing but seem to apply to the whole order. However, I've seen it suggested and my own testings shows if you don't log in and use the express checkout you should be able to use it again. Or create a new account. By the time you reach PayPal you've already put in the coupon and it's been reduced so I don't think the fact you have the same PayPal account will matter either. I made my first order with an account and then tried without creating an account all the way up to just before I clicked submit on PayPal and the price stayed the same. If I log in it says I've already used the coupon.
Of course you can't use any 'coins' you've gained if you do that and I haven't read their T&C to see if that technically violates them. Oh and their customer service could cancel any order and refund you if they feel your abusing it.
I also belatedly (i.e. after I already ordered) realised that if you put in a recommender you get an additional 5% discount for your first order and it does stack with the 10% for a total of 15%. Sadly this was after I ordered and even I can cancel now I'll lose most of any savings in the exchange fees... Again either don't bother with accounts or create multiple should allow you to use this again.
Anyway I've put an order for the 8 cases and specified 2x blue, 2x green, 2x orange, 1x clear and 1x yellow in my PayPal payment and a message (they say you can specify but their order system forces you to select one colour) so I'll see if they get that right. I also found that the bicycle mount I'm getting which I already ordered from DX was about 40 cents cheaper before discount so ordered that as well. I probably should have waited until I found out if DX are going to cancel my order (well I didn't realise it wasn't going to be instant last time it was) but I don't mind getting 2 of them. For the bicycle mount they sell it for more on eBay so things aren't always cheaper on their eBay store. (I did search eBay first, it was about 3 cents less so I decided to stick with DX since I did use them for research, although I later realised I forgot to look on KD and they are cheaper too.) I also found you get a measly 10 cents off for multiple items in the same order.
So we'll see how it goes.
Other then the cases, they also have the black/red flame trustfire for about the same price as DX. With the 10% discount they do work out cheaper (cheaper then getting 2 of the 2 pack from LT with their 5% too). They don't actually seem to have that many flashlights and none of them seemed interesting to me (their only XPG appears to be the AA) except perhaps they have a WF-501B with 3.7V, 6V or 7.4V Xenon bulb for $8.62 and WF-502B with same options for $9.69. May be useful if you want a host although lightake are cheaper for just the host even with BIC's 10% so unless you want to play with the Xenon probably not much use.