Oh good grief. Please reread what I said with some actual thought. I said Sams didn't have to be the cheapest, so price is not the only consideration. I said I wanted to shop around a bit. no need for the nasty attitude. I have bought LOTS of parts from Sams and greatly appreciate all they have done for me. And I definitely take the cost of my time into consideration, but I don't make $75 per hour (your figure, $25 savings and you are still down $50, so you must earn at least $75 per hour) and the savings on zincs from being a Port Supply member is substantial. If I only choose based on service, I'd simply pay the local Hatteras dealer to do all my work with an open checkbook...which would be foolish even if I could afford it, which I can't. I'm happy you are financially successful enough to not worry about costs...I am not, likely never will be. I'm just a mid-level governmental employee who loves his Hatteras and needs to be careful with budgeting to ensure she is well cared for while leaving enough every month to take care of other obligations like my new-to-me step-daughter. If I save $50 on zincs, that $50 more to spend on her or another boat project.
Just to compare West Marine prices to Port Supply on zincs:
Shaft
Westmarine $24.99
PS $17.34
Rudder:
West Marine $26.99
PS $18.45
Tabs
West $19.49
PS $11.89
As you can see, considering that multiples are needed of each, the savings is a pretty high percentage. PLUS they deliver for FREE...I doubt Sams does that for heavy zincs.