here is one of the build sheets
HLG 260 DIY
2/3/21
PharmerBob
Their 260 double runs for about 350$
But if you broke that down and used hlg for the main part you want, boards and heatsinks what’s left?
Wire, wagos , driver, hangers with clips
So hlg gives the option to buy the board and heatsink for 185…
Lights and boards $185 +30 shipping -$215
horticulturelightinggroup/products/qb288-v2-rspec-slate-2-double-combo-1
Driver $43
HLG-240H-C2100A-Quantum-Board-LED-driver-/202967831306
Wagos $9
Wago 221-412 LEVER-NUTS 2 Conductor Compact Connectors 10 PK https://www.amazon.com/dp/B06XH6WW4D/ref=cm_sw_r_cp_api_glt_fabc_C9H5XR84SKMBN91HNQ8Z?_encoding=UTF8&psc=1 1
Hangers w/ clips $7
Bayyee Rope Hanger Hanging Basket Plant Holders for Indoor and Outdoor LED Grow Light Aquarium Lighting Tank Lamp, Stainless Steel (16’’ Black 1Pair) https://www.amazon.com/dp/B01KLSSA8O/ref=cm_sw_r_cp_api_glt_fabc_VRMS274QGWG4T84ZXM5A?_encoding=UTF8&psc=1 1
Power $11
Pinfox 6ft 16 Gauge 3 Prong Heavy Duty Replacement Power Supply Cord Cable 110V 115V 120V Pigtail for Universal AC Appliance, NEMA 5-15 Plug US SJT 16AWG (12A) https://www.amazon.com/dp/B06XRKXLVV/ref=cm_sw_r_cp_api_glt_fabc_S0SGDM0P4VWWBB2CS6A2
18g wire x2 (black & red) $16
RadioShack 18 AWG Solid Copper Hook-Up Wire - 25’ Spool, Black https://www.amazon.com/dp/B088F5B9M3/ref=cm_sw_r_cp_api_glt_fabc_AA7VD9ZS6AQN24XHCDXA
$301 Cost savings of $150/ unit and I’ve got shipping covered in my cost