What can I get for $300

I am in the new the market for a new light setup. My tent is only a 2x4 but would like to get a light big enough for when I upgrade to a larger tent. My budget is about $300 and would love some suggestions.

heh heh seriously tho, I guess Samsung F strips or EB gen 2 strips DIY, about the only way to get to 400 watts for around your budget, which you would need for a 4x4 tent. About $1 per watt of high efficiency LED is the typical DIY rate, retail fixtures will cost $2-3/watt

I'll second the Samsung F series suggestion. Four of the double row 4 footers would be just under $200, and another $90 will get you a pair of HLG-185-48A's to run them. When you expand to the 4x4, add two more strips and run them a bit softer, and get better spread.