Batman A dark Winters Knight Snowglobe #4 of 3000

Hello I have a new Batman A Dark Winters Knight Snowglobe in box with certificate of authenticity #4 of 3000 and wondering how much it’s worth or I can sell it for. I looked up some past ones on eBay & amazon and look around $200-$500 so don’t know how I know what’s it worth ? Does the # mean anything ? The box is a little worn on the top but other than that it was just opened but never used .thanks ! Any advice would be appreciated.