I was once like you. I wanted to keep to a small wedding budget, but I still wanted a killer wedding dress, and I wasn't about to cobble one together myself with bubble gum and paper clips. As far as I was concerned, the dress could take up 90% of the budget because, darn it, wedding pictures last forever. But then. Oh. God. I had a wedding-dress-shopping experience so horrible that it put me off ready-made dresses altogether.
First, let's talk about David's Bridal -- we thought it would the perfect place to look for a pretty dress at a reasonable price. When we arrived, the greeter barely spared us a watery smile. No one helped us look, which proved to be a great difficulty considering that signs everywhere warned that the dresses could only be touched by a handler. We sought out one such handler, only to be clucked at for not filling out an extensive questionnaire when we first arrived. We explained that the greeter had not said anything about it, yet we were still waived to the very end of a now-lengthy questionnaire-filling line. At this point, we merely walked out of the store, unwilling to give them our business. I do believe my bff used a few creative expletives on the way out - one of the many reasons I love her.
The rest of the day proved just as fruitless; either the prices were way out of my range, or the designs felt phoned-in, or the quality didn't justify the cost. I was tired, angry, and fed up with the process -- and it had only been one day! In the

I knew my sewing talents were very, very limited, so I set out to find the simplest pattern possible, figuring that I could make up for the lack of drama with a pretty fabric. Google magic helped me find a pattern for a dress that only required one seam. Yep, only one seam. Perfect for me! Plus, this particular one-seam dress is called an "infinity dress" for its ability to twist and wrap and drape into a near-infinite amount of styles. I had to be able to find at least one flattering version out of infinity, right?
Somewhere along the line, I got it into my head that I wanted white-on-white stripes for my dress. I couldn't find such a fabric online, so my friend and I headed out to Downtown LA's Fashion District. I had hoped to find something to my liking at their famous $1/yard stalls but, alas, my picky nature bit me in the backside. I ended up finding the perfect overlay at shop selling drapery fabric -- hey, if curtains are good enough for Scarlett O'Hara, then they're good enough for me. I found my lining fabric at another stall downtown, too.
All in all, I spent about $50 on fabric. Throw in $10 for the cost of a rolled-hem presser foot to finish the edges of my fabric, and that's $60 for a totally custom, customizable dress. Not bad at all... especially since it only has to hold together for one day!