The more items ordered, the lower the shipping. It's based on total weight and each light ordered is shipped in a separate box.
Edit: If you want an eShine unit....you better buy it now!! I just talked to Peter and they are discontinuing many of their previous units (thus the sale pricing) and moving toward higher end and with that is a substantial price increase. As an example, the 48x3 Cree with controller that was $385 is being replaced with a 36x3 Cree with a much better controller but it will be $550. They don't even have any of the 48x3 Cree with controller left in stock otherwise I would have bought one.