You guys want a suggestion, try this one, open an actual store for one of your games, not another casino. Your item malls seem riddle with gambling items, gambling wheels, gamble forges, short periods of time to spend enough to get some extra stuff that may only be available in those ladders/tiered spender periods but no one knows what will be offered or when, grossly overpriced packages which have items only available that way, purchase restrictions on direct buy, and so forth. To make matters worse there's the errors and confusion, items priced one price here, another there, some items in the web mall but not in-game or the other way around, items marked (NT) that can be traded and other such things.
Just open an actual store, sell your stuff at fair prices and make sure it's accurate. Have a sale now and then, packages if people want to use them but with no exclusive items and other things like that. It's simple but there's no real need for it to be complicated, simple is good.