Before I post any links I just want every one to know I am not affilliated in any way with the following suppliers. I have just found them to be the downright cheapest place to get what most of us need.
So lets start with 99% of our vitamins shall we.
Check out
Zoro Tools on ebay. I payed $55 (free shipping on orders over $50) for all of my threaded rods (2x M10, 6x 5/16, 2x M5) + all the nuts, bolts washers I needed.
For my smooth rod I used o1 tool steel which I got six three foot lengths for $31.99 shipped from
Wholesale Tool
I did a ton of research and those are the absolute lowest prices I could find. My shipment from Wholesale Tool hasnt arrived yet but every thing from Zoro Tools has arrived and its all super great. Rods were straight and all the other parts are just as you would expect.
Also a lot of the bolts from Zoro were stainless for less than I could find zinc from every one else.