I bought 6 ($4 ish) yesterday at T&T (Warden) for $4.99/lb. 2 of the 6 were spoiled, the rest were edible but not in great shape. The shell itself was incredible hard to cut through, there was no point to give at all like you would find normally.
Anybody have better luck w/ mangosteens of late? Chinatown fruit vendors? They're an expensive gamble at times, considering the weight of the fruit is in the inedible shell.