Currently it cost 100 gold to buy a sentry and u get 160 gold when u deward. One irritating issue is that u place the sentry, reveal the ob ward but your allie destroys the ward and takes the gold. Thus, i suggest tweak it such that the placing the sentry ward to reveal the observer ward = gives 100 gold and destroying the ward gives 60 gold. Furthermore, reveal enemy sentry ward should also give 50 gold. This way, good warding = is rewarded. Isnt it nice to hear the ka-ching sound when u place a sentry ward properly..because it reveals the enemy observer ward and sentry wards. Supporters should be properly acknowledge for their play. Of course, make it such that each ward gives the reveal reward once and not multiple times.