In need of milk for 5 month old asap

Hello! I am in need of milk for my 5 month old daughter. I have insufficient glandular tissue and have always struggled with low supply. with my other children, I have always supplemented with formula. This little 1 has severe acid reflux and has not been able to tolerate any formula that we have tried her on. I kept reading that breast milk was better for babies that have reflux since it was so much easier for them to digest. so that is what led us to look for donor breast milk. the very first day that we tried only giving her breast milk, it was as if she was a brand new baby. with formula she would scream after every feeding for at least 2 hours. she was just miserable all the time. but she doesn't do any of that with breast milk which is great because we found a solution. but the problem is that breast milk is so hard to find where I'm from. there are so many people looking and sometimes I feel so guilty taking it from another baby when I do find some. we have 0 stash at all and are currently living from 1 donation to the next. I'm constantly stressing over where I'm going to find milk for her before she runs out. so I thought that I would try looking for someone to ship some instead. obviously, I have never dealt with shipping before so I'm really hoping to find somebody who does know what they're doing lol. I will of course reimburse you for all shipping costs including the cooler and replacing your bags. I know that shipping is expensive so I would prefer to find a large amount of at least 500 ounces maybe? I'm not trying to be picky or greedy. I'm just trying to be as careful as possible financially since my husband just unexpectedly got out of the military on a medical discharge. he is working but it took awhile for him to find something so we're trying to rebuild our savings that we pretty much blew through while he was looking. my daughter has no special dietary needs however she cannot tolerate milk from mommies who have taken lecithin supplements to prevent clogged ducts. I am in Southeast Georgia. please please please contact me if you think you can help.