I only play EDH, so I'm really not too concerned with things being "pack fresh" outside of foils. I'm fine with MP for most cards, and I'd consider HP for some of the truly high value/older cards. Just please don't send something as a higher condition than it is to get more points.

As far as my marketplace listings go, if you want more than 6 cards at a time, just go ahead and create another package. I can only fit 6 cards in a single envelope, so you will just get multiple envelopes.