So. I've done a couple of costumes before, but nothing Star Wars, and nothing I actually had to build, so this is new ground for me. I'm also trying to do this on a budget, using ideas from various threads I've found around the forums.
I've seen a number of threads on cheap builds for various items, but none of them seem to have actually finished. I'm hoping I can use what others have started and make a complete accounting of my build and its costs.
Here's my MandoMaker concept:

Here's a list of items that will make up the costume, and their cost (Trying to account for everything that I need, list will grow as needed):
UPDATED 9/4/12: Kit approved, Final tally.
Soft Parts- Flightsuit ($25)
- Black Dye ($2)
- Pouches ($10)
- Gloves ($15)
- Vest, Duck cloth and thread ($15)
- Belt ($4)
- Boots ($35)
Armor Plates- Plastic Totes, 2 ($10)
- Velcro, Sticky Back and Sew-on ($15)
- Elastic Strapping ($3)
- Snaps ($2)
Helmet- Hasbro Boba Fett Helmet ($11)
- For Sale sign ($3)
- Welding Visor ($10)
Gauntlets- Toilet brushes, 2 ($12)
- Continuous hinge ($8)
- Platform Bases ($2)
Weapons- Hasbro Boba Fett Blaster ($20)
Tools/Hardware- Hacksaw ($7)
- Hacksaw blades, 5 ($3)
- Hand sander with sandpaper ($12)
- Spring clamps, 2 ($2)
- Heavy Snips ($8)
- Nitrile Gloves ($2)
- 2-Part Epoxy ($5)
- Plumbing Epoxy ($5)
- Spraypaint ($36)
- Bondo ($9)
- Fiberglass Resin ($13)
- Glazing Putty ($4)
Final Cost at approval: $263
First piece I obtained was I flightsuit:

I picked it up at a local Army Navy Surplus for $25. 100% Cotton. Had to remove German flags from the sleeves, but otherwise seems great.
Next piece was a trenchcoat.

$8 on a 50% off clothes Wednesday at the Salvation Army. I'll be cutting it up to make a vest (per Ohld Vart's guide
http://mandalorianmercs.org/forum/index.php?topic=21956.92), and if I can, a kama as well.
The armor plates will be made from totes, (per Mar'eyce's guide
http://mandalorianmercs.org/forum/index.php?topic=21956.0) I've heard conflicting opinions on its workability, but I can't ignore the cheapness factor here.
Gauntlets will be from toilet brush holders (per Condar Ward's guide
http://mandalorianmercs.org/forum/index.php?topic=43869.0).
I'm planning on buying the Rubies 2-piece Jango for the helm. Scratchbuilding is a little too intimidating for me on my first go around. I'm not very big, the size should be alright.
That's all so far. Hope to start on plates soon. If you see anything missing from my list of needed items, let me know, and any other tips, comments, or advice are perfectly welcome.