yeah it appears roseman was a mouthpeice for stealth hydro
Not quite. He has many DIY yourself threads. He would always tell someone cheaper places to get everything. If he was a "mouthpeice" for SH, he did a piss poor job.
Just saying.
As for poor design? Net pots too small?
That's the gardeners errors, not the system. Net pots don't restrict anything. If you are growing a stalk larger then 3.75" then DWC might not be the best system. Indoors might not be the best setup for those trees either. I am not going to bother, but there are plenty of pics of some massive "trunks" coming out of those netpots.
Over priced? Yup. But sometimes its easy to pay them and find out.
Expensive? If it is, you may want to consider NOT growing anything. It's what? $99? Thats not much. I know, its a lot to some. But if you are looking at $100 as a huge expense, then maybe outdoor gardening should be considered first. Yes, this can be done on your own, much cheaper. Roseman has tutorials for this, too. He even took the time to find the cheapest places to source each part. None are sourced from Stealth Hydro.
And BTW... awesome avatar!