At Gencon I purchased 2 Core sets, 1 X-Wing, 2 TIE, 3 TIE Advanced, 3 Y-wings
That gives me 3 of every ship but TIEs and I have 6 of those.
I could have reduced the price I spend by buying three starters, but I wanted wedge and the TIE pilots.
I really like having 6 of each dice. It really isn't that uncommon to roll 4 dice and we have even had occasion to roll 5.