Strictly speaking, regular adult admission currently is $60.....with a $10 discount to those who buy online 7 days in advance (and $5 from 1-6 days in advance). There are also plenty of other extra-cost tours.....rooftop, behind-the-scenes, group-guided, and personally-guided (at $150/head adult)......plus bus tours of the property.
Were you aware that most summer weekends (and other "special" days) also follow a reservation-only policy, in that you must choose a specific, pre-determined entry time (which the ticket buyer can select based on availability) ?? I thought I overheard someone say that such days are limited to a total of 4,000 tickets sold. Also, while there apparently are AAA-related admission discounts, that from my local club in Cincinnati was only $8 (less than the advanced purchase discount through the website). Perhaps they're lower in Greater Asheville (or other clubs in NC).
But make no mistake; if you take a family.....as I did.....the Biltmore can be a damned pricey proposition. Between admissions, an admittedly very pleasant lunch, and souvenirs.....my wife and daughter both "needed" Biltmore sweatshirts.....it was upwards of a $400 day (which didn't include local accommodations.....for which I used Rewards points for our two rooms.....and dining the previous night).