We always love seeing pictures on here 8D
All bettas have different personalities, so buying them on aquabid wouldn't guarantee getting girls that would work together. I have petstore girls myself (bought from 3 different stores) so you really just need to keep an eye out and see which ones are turning mean.
If youre looking for siblings, try seeing if you can find some breeders nearby you, you can check the classified or betta chat on here if get stuck looking. Siblings will usually have better luck since they have grown up together and are used to a sorority setting, however, you might get one thats just not suited for living with other fish.