Cool,
3k will get you a nice Joe's 4x4 with quite a few upgrades.
When building my JGRO I found out that fastenal in Edmonton carries all kinds of stuff like acme screws, 8020 extrusion etc. Also, if something isn't on their website, it doesnt necessarily mean that they don't have it, just give them a call. I haven't done my shopping for my joe's there yet, I am waiting for my gear rack and V-rails to show up form the USA.
Also, I did make a thread on here about it because it took me a long time to find HDPE sheet. Eventually I found that Johnston plastics in Edmonton has it, and it is very reasonable. Actually it's cheaper there than I could find it online once you pay the shipping. Again, it's not on their website, but give em a call when you need it.
JGRO Complete - G540, 380oz Nema23s, 1/2-10 ACME, 30"x14", Craftsman router
Joes 4x4 R&P in progress