The only people getting through this door are the ones who are on team Grow. Outside of Balloon Warz, this functions as a normal entrance.
Team Entrance - Grow price in Growtopia: sells for about 19 DL (median of 4 offers from community Discords, past 30 days). Live price chart and the latest buy and sell offers.
Recently sold at: AGJ, F52W, HEN, NOELL