Not sure if this is used as a metric in hidden MMR calibration or anything at all, but...

If you buy and then immediately sell consumables that are considered 'support items' (wards, smoke, dust), the 'Support Items' column at the end of the game includes the items that you have immediately sold.

I could not buy any support items all game, then spam buying sentries and immediately selling them. If I bought and sold 80, the scoreboard would should that I bought 80 sentries and spent 8000 gold on support items. If it's not used in any kind of metrics, then fine... but if it is, I think this could be abused.

Suggested fix: Only include gold cost for 'support items' if the item has been purchased, and the 'sell back at full price' time has elapsed (9 seconds?).