Homebrew PCBs

Hi,

I'm wondering if anyone knows where is a good place to buy >= 100 UV 
LED's for home made PCB exposure box ? There are two sellers on eBay 
that I have found: (all prices below include delivery)

http://stores.ebay.com/Winsome-House-Store
They are advertising 100 x 3000mcd(typ.) 20 degree UV LEDs for US$11. 
This sounds almost too cheap.

http://stores.ebay.com/Light-of-Victory-Led-Store-lvehk
They have 100 x UV LEDs 20 degree 7000mcd(typ.) for US$32.
or 100 x UV LEDs 20 degree 3000mcd(typ.) for US$15.

It would seem I could use half as many of I buy the 7000mcd compared to 
3000mcd. I'm guessing a 20mm grid spacing would be a good layout for the 
LEDs.

regards,

Adam