Again, you are in dreamland my friend. You've just doubled your price from $400 to $800 and that's still not enough, and take it from an engineer, you cannot make something for $650 or $700 and sell it for $800. The profit margin would be totally eaten up by marketing and shipping costs. If you make something for $700 you have to sell it for double that,, at least $1,400. I've been involved for many years in engineering design and development. Maybe when you are older and go to college you'll understand how manufacturing costs and margins work. The next Quest 4 will likely have better tech and be much lighter, (Project Phoenix device, most likely), it won't be subsidized and will be somewhere close to $1,000.