Talk:Wonder Challenge/@comment-175.137.38.250-20120421052330/@comment-5030856-20120421065936

TinyCo put a restriction on the maximum number of these items that a player may build. I had built 4 temple workshops to speed up my progress through the challenge, but now that building is no longer listed for me to buy, since I already own at least one. When TinyCo places a restriction on an item, those players that already own more than that new maximum number are able to retain them. This is why you will find occasional anomalies like someone owning a bunch of bright street lamps. They were purchased before the restriction. These items are still retained when placed into inventory, but if they are sold, the restriction comes into play.