No 'no name' brands.
I'd like to know if there is a basic order of magnitude rule with regards to output/cost.
Can you get a 100 lumen light for $10?
Will a 1,000 lumen right run you $100?
Who will sell a 10 kilo-lumen first? Will it be under $1,000?
An inexpensive quality 100 lumen light will be around $30, like the Illuminati.
An inexpensive quality 1000 lumen light will be around $150, like the Catapult.
An inexpensive 10000 lumen light would be a hand built Mag hotwire, so the quality would depend on your skill and investment, but you could probably pull it off for around $300.
Just got a chinese XML light for $28 shipped. Manufacturer's claimed output is 1200 lumens but in reality it is probably no more than 850-900. In any event, lumen ratings don't mean much as they tell you little to nothing about how the light performs. It can easily be shown that a 150 lumen light can be brighter (greater throw, higher lux reading) than one that has an output of 1750 lumens.