I'm very very happy with the KIS nutrient pack, works great. I'm not on here much these days but I'd be glad to pass on my conclusions of the various testing I've done with it. Are they charging to ship it now? It was free shipping to Oregon last year, but even then, the cost really pays you back over time as it costs almost nothing to reamend it for each grow, and you will not need to repurchase soil or bottled nutes, not even calmag is needed, it's all in there.