Here's an easy DIY panel using top bin CoolWhites and WarmWhites available right now at cutterelectonics.. with premade drivers...
Cree XP-G
10 CoolWhites top bin available right now
10 WarmWhites top bin available right now
$152 USD
http://www.cutter.com.au/products.php?cat=Cree+XPG
10.000" Wide x 10" Long Heatsink
Extruded Aluminum Heatsink
Width: 10.000"
Fin Height: 1"
Base: .300"
C/W/3": approximately .90
Weight is approximately .50 lbs per inch
Price: $30.65
SKU: G010
Shipping: Calculated at checkout
$30.65 + tax and shipping ($60?)
http://www.heatsinkusa.com/products/10.000"-Wide-x-10"-Long-Heatsink.html
BuckPucks
3021-D-E-1000mA BuckPuck Features:
Max Output Current: 1000mA
Max Input Voltage: 32VDC
Min Input Voltage: 5VDC
7-pin SIP connection, through-hole PCB mounted
Optional wire harness
External intensity control (0-100%)
External analog/digital intensity control (TTL compat.)
Drive up to 18 1W LEDs & up to 6 3W LEDs
Output short circuit protection up to 15 seconds
Output open circuit protection
Small form factor .78"x.78"x.43", 8.1grams
Built in regulated 5V reference/output to power local logic circuitry/µProcessor
$14.99ea + tax + shipping (if they don't mail)
Get 2 of them.. one per string.
http://www.ledsupply.com/03021-d-e-1000.php
Or $20 each at cutterelectronics.. might be cheaper if getting all in one shipment.
http://www.cutter.com.au/products.php?cat=BuckPuck+-+Pins
BJB Solderless Optic System for Cree LEDs
Price: 1.95 (2.15 Inc. Tax)
2.08 USD 1.58 EUR 1.32 GBP
http://www.cutter.com.au/proddetail.php?prod=cut963&cat=104
AC/DC Power Supply Single- Output 24 Volt 6.5A 156W (MEAN WELL S-150-24)
1+ $34.95
http://www.jameco.com/webapp/wcs/stores/servlet/Product_10001_10001_123450_-1
=========================================================================================
LEDs = $160
HeatSink = $60
BuckPucks = $45
Power supply = $50
==================
----------- = $315
==================
Solderless holders = $40
=========================
------------------ = $355
Lenses.. about $1.25 a piece
http://shop.niviss.com/category.php?id_category=41
Or from the manufacturer themselves, about $1.50 a piece to Vancouver..
http://www.ledlink-optics.com/ProductsListLed.aspx?ID=C29DD4A4C3D943D2A015DC0B8F154859
That's all calculated using the worst case scenario for shipping charges.. it might be cheaper if you're in the US.
The LEDs will leave you with 2 spares of each.. CoolWhite and WarmWhite. Each string of 8 will use about 26V.. the Mean Well has a trimpot adjustable from 21V to 28V.. says so in the specs, and I've verified on my own units I just received.
That panel design above is actually going to be my clone/veg panel.. I need a few more diodes.
I'm planning on starting with it, and plan to breed some cherished strains I want to revive.. that are 15 years old.
Even if I can't revive "them", I'll get something going from my stash collected from the rare seed gotten from medicine at the club. I plan on doing a full grow with the mothers in there.. to get used to the LEDs, and to see what "just whites" will do. Who knows.. I may be able to skip the 735nm's from LedEngin, if the WarmWhites pump out enough by themselves. If the plants transpire ok.. then that'll be a good sign.