I had accumulated 3 rare and 3 epic panties and went to sell them but noticed the max I was getting for them was $100.

Previously when I had sold 1 rare and 1 epic, I had sold them for a maximum of $35.  I had also sold 2 rare and 2 epic for a max of $70, so I am assuming we should be able to receive a max of $105 for 3 rare and 3 epic but it seems like the game maxes out at $100 when selling items. 

Is this actually the case and if so, can it be increased above $100 in a single transaction since we can't choose what we want to sell manually ourselves?