Granty666,
I went through the same process you're going through almost a year ago. Got married June 3rd, 2006, and only had a cheap acrylic/polyester kilt Jan. 2006. By the time I was done, with a Price Charlie Vest & Jacket, Fly Plaid, brooch, hose, flashing, ghillies, kilt belt, sgian dubh, buckle, MacKenzie Modern Tank 16oz. wool knife pleat kilt, and kilt pin, I was at $1,350. My wife was upset because my outfit cost more than hers. And I'll be wearing it more than once.
Pictured here:

Ignore the Sword. That was an extra $2,000 that you're not looking for, but We did cut the cake with it.

As many have stated, getting a PC is an expensive undertaking. As I attend formal events often (3+ or so a year) it was a wise investment. Events like Military balls, or formals give cause for it. Nothing looks sharper at a ball than a full PC and Tank.

My Tank, PC, and limited accessories came from www.ScotlandForever.net Only used them because they are local (located just outside of Dallas), and I could goto them to get measured. But things like my Utilikilt I measured myself using the online instructions. Again as others have mentioned that.

PM me or email me, and I can give you some pictures from our wedding for ideas. Tartan ribbon around the grooms cake, kilted groom and bride picture frame, etc.