That's for the input folks. =)
I've worked out the cost, value, and profit for some of the items mentioned here based on the median prices on allakhazam. All numbers are in silver and per item (i.e. each gyroshot, not a stack). Obviously prices vary per server.
The price for green lens is based on the overall average since there are many median prices depending on the random buff (some, like +24 sta or +24 int are VERY profitable). Also, cost for iron grenade varies depending on if u get 2-4 so i used the average of 3 grenades per production and the value for the iron grenade is the vendor buy price (since everyone mentioned vendor trashing it).
Item Cost Value Profit
Mithril Gyroshot 0.2375 0.25 0.0125
Iron grenade 4.67 5 0.33
Bronze tube 3 25 22
Mithril tube 60 83.33 23.33
deadly scope 275 300 25
Ornate Spyglass 69 100 31
Mithril casing 60 100 40
Deadly blunderbuss 22.35 75 52.65
sniper scope 265 475 210
Green Lens 734.5 966.87 232.37
Discombobulator ray 89 375 286