The cheapest lamp I found in Canada with the minimum 10000 lumens was the Litbook Advantage which retails for $109cdn/$80usd

I am no where near having the Depression I usually experience this time of year. Normally I would be sleeping 12-14hrs a night in addition to napping during the day. Now I sleep 8-10hrs a day with no desire to nap at all during the day. My mood is great right now but that may be due entirely to outside inclfuences, not sure. Still I credit the lamp for an improvement to my sleep which probably does have an affect on my depression.

The Canadian Mental Health Association rents them out and my local mental health drop in centre gives them out on temporary loans.

All in all, I recommend them.