So it seems like in HOW to upgrade a weapon exotic it will cost 1500 glimmer 25 weapon parts 1 exotic shard [b]so if you have an exotic right now you are leveling only buy th perks up to the last tree this will save you ascendant/radiant energy and exotic shards[/b] I'm assuming the gear will be around the same amount no need to upgrade that final tree on some gear Just thought I'd let people know incase they didn't already understand that:)