the cardinals do "Winter Warmup" every year. $40 or so for a 3 day pass plus cost of "line tickets" for most players in attendance. cost varies by player, and it can get expensive, but at least the cost of the IP autos get donated to charities.
Well thanks to our crappy network being down at work for about 2 hours in the morning, I totally missed out on autograph tickets. I skipped buying an adminission ticket as it just isn't worth it without getting some autos.