I dont know..Around 500€
@TreeFarmerCharlie There isnt any option of QB with good coverage under 400+ w
I dont belive that one 320w board can cover good 1x1m tent..
I would rather go with strips somethig like lumatek.
My advice: Diy and get 4 boards, one for each corner, whatever board you like and prefer.
Euro boards are invisible sun horticulture, led-tech.de, diyleduk but not sure if he has singles.
If you can get your hands on 4 or even 8 qb132 or qb120 it would also do great.
Or go for alibaba, meijiu or kingbrite.
Strips for one meter is hard, would be easier to just get another tent of 60x120 and go for 2 foot strips. this might even be cheaper than kiting out 1m.
Oh yeah, you can do 2x0.5m strips from led-tech.de they are not bad priced but you need some alu for heatsinks and driver. Probably run you about 200e in chips. Add heatsinks and driver and you should be able to do less than 500.