Hi, the Reef Breeders Holiday Group Buy will start on November 17th and end on December 1st (we will NOT accept orders after midnight on November 30th). To join the group buy, simply email us at GroupBuy@ReefBreeders.com with what you want to order, and which optics you want on your light(s). We will reply with a link, which has your order on it, as well as the price list. The price list is PRIVATE, DO NOT post it on any forum, or in this thread. From there, you can checkout via PayPal or credit card. The fixtures will likely ship in about 2-3 weeks, however, allow until the Beginning of January us to ship the lights. We will try our best to get these out in time for the holidays, but there may be delays, and we cannot guarantee that with 100% certainty. We started the buy a little earlier than anticipated to try and get these lights shipped out before the 20th of December. Also, to clear up some confusion that occurred in the last buy, the fixtures come fully assembled, with a remote, hanging kit, and controller. And, for a custom layout, you cannot change the channels in any way, but you can change which color LEDs are on each channel. Shipping is included in the pricing of everything except for LEDs that are not purchased with a fixture, shipping will be an additional $5.10. Here is a template for the information that should be included in your email to us: Email Address: Your Email Address Full Name: Your Full Name Fixture: The Fixture You wish To Order Options: The Optics You want on the Fixture, and/or any customization you want done (customization is $10 extra, and optional) Parts: What LEDs/Optics do You Want, if Any? Thank You, we look forward to running another group buy with you guys, and we will continue to do so in the future. If you have any more questions, you may ask them here, or email them to GroupBuy@ReefBreeders.com.