LL Brand

 LL brand is the house brand (I believe) for Lavinia Lingerie that caters to Matrix Sizes. 

https://lavinialingerie.com/collections/vendors?q=LL

I believe they are made it Latvia, so I will tag them as ethically made. 

Lavinia Mystic Winter Light Semi-Sheer Lace Bra

Lavinia Plumy Floral Lace Plunge Push-Up Bra

Gorteks Marilyn - Sale Bra

Full-bust bra $27 + shipping 

 https://lavinialingerie.com/collections/marilyn-gorteks

Good for narrow roots, close-set breasts, FOB

To see other sale bras at Lavinia Lingerie, see this page https://lavinialingerie.com/pages/sale-up-to-80-off

Because these are European-sizing, it may entail a few back -and-forth exchanges to work out your correct size. *Unless you know you're sizes in Polish bras well, this is probably most affordable for U.S. shoppers, shipping is $3.99 in the U.S./$14.99 to Canada/$19.99 worldwide