Hi John. It has not been tested by EZ Handrail and I am not personally familiar with the Stanford post. Thank you for your question. Dan H. (EZ Handrail Dev. Team)
Yep, $22 for one base. This system is pretty pricey but ended up being a pretty quality system.
Yes the low profile base cover is available in white. In search bar type the model# EZBCW-LP Thank you for your consideration, Dan H. (EZ Handrail Dev. Team)
EZ Handrail does not contain any plastic parts. Dan H. (EZ Handrail Dev. Team)