I've been using 8 hours for about 3 weeks and I think it's helping me fall asleep a bit quicker and stay asleep. I looked at the pricing, good quality supplements can be expensive but the cost for a 6 month subscription works out at £25 a month, which I think is really reasonable - magnesium alone can cost more than that, and although you could go down other rabbit holes about what kind and how much etc etc, bisglycinate is known to be one of the best forms. I was interested to try the combination of ingredients they provide and it seems to work for me.