Check here: http://www.reddit.com/r/braswap/ and http://brarecycling.com A lot of the websites recommend Brastop but the company is in the UK and I'm not sure their bras are cheaper due to shipping costs and sometimes you have to pay duty. I also just read they show prices in pounds not dollars so the prices are higher than you think.

If you don't see the size you're looking for on braswap post a request for the size. Measure, measure and remeasure before you do.

I've donated to brarecycling.com but I don't know their procedure for distributing bras. You may have to go through an agency so contact them. Also, try Goodwill, Ebay, etc. I used to donate to Goodwill until I found The Bra Recyclers. There's lots of women out there trying to get rid of bras that don't fit. Even if the bras aren't perfect fit anything's better than a bra that's falling off. Sad to say, it took me 7 years to find the correct fitting bra, I finally got the band right but was buying my cups too big. I think that's why the uprise in blogs and websites on bra fitting. There's lots of good advice on ABraThatFits. You could ask them for suggestions, too. Hopefully, the American bra industry will get their act together and start providing a wider range of sizes in their brands and in the stores and better fitting advice.