Consider becoming a member of the A's Boosters.
Ok, many of the A's Boosters Club members have been fans longer than I, but consider joining to support the organization. The Boosters do Spring Training trips, monthly lunchs during the season with A's players and coaches as guests, and offer discounted group tickets for many games during the season.
It is only $10 year to join, and you save more than that if you take advantage of the group ticket offers. And, you can buy as many of those as you want.
If you are interested, send $10 check to Oakland A's Booster Club, Membership Committee, Box 7924 Fremont, CA 94537-7924