I'll break it down price-wise *****ALL PRICES ARE IN USD*****
Permanent hair costs per style 4300 NX
Inner armor ranges from 4900-9900 NX
-The 4900 NX is just a recolor of the default Basic Inner Armor
-There are a few inner armors that are 6900 and 8900 NX
-The newer and fancier inner armors usually go for 9900 NX
The maximum cost comes to 14200 NX if you purchase 1x permanent hair and 1x permanent inner armor directly from the avatar shop.
So it comes to $14.20 which is $1.50 more than this pack, as the conversion rate is $1.00 USD = 1000 NX.
*Another thing to take into account, NX is sold in increments of $5, $10, $20, $50, $100 USD. So you would end up paying $15 ($5+$10) or $20 to cover the NX cost.