I've been watching the Arkadian key prices lately, and either some people enjoy selling crafted items at a loss or they're not sure how to calculate actual cost to craft. I realize this happens with all items and that there are a number of reasons why items are sold at a loss, but it's a good bet that a number of people click the "construct" button without really knowing what selling prices will bring them a real profit versus a loss. So, I thought I'd share my own calculation and log sheet. It may be a little more complicated than some you have seen, but it has a lot of automation and useful info in there, including automatic calculations of cost per crafted item, how much materials need to buy to get X number of clicks taking into account what you have in storage, estimated time to craft, TT return, etc. I just ran off 100 clicks of Arkadian Key 3 to show you some real life numbers. When you do a run, enter the number of clicks you made and then info from the "Statistics" button in the crafting interface and the sheet does the rest. The sheet can be modified for any BP, just insert rows in the recipe section and make sure the formulas stay consistent row to row. Key 3 worksheet (New) Fuel Cells Ongoing Log Sheet A few notes: Input your info into the boxes in green (materials MU, number of ingots in storage, MU of residue, etc). If you've done it properly, the sheet calculates precisely what MU you need to charge in order to break even on your run (in terms of TT+? for non-stackables and a % MU for stackables). When entering the amount you have in storage, make sure you only enter EITHER number or TT for each row, not both (rows can be different). A couple notes about the Key 3 in particular: I use my own Alloy plate bp (QR>75) and generally use khorum that I mine efficiently myself (so ~ 110% MU). This means I can make alloy plate at ~ 130% MU, if I don't use expensive amps for the mining. Therefore, most key crafters are going to have higher costs than I had on this run. If I had bought my alloy plate at MU (180%) it would increase the break even price of a key to TT + 9.87. You can plug various material MUs into the page to see how it would affect the price. For my run, the real cost per key is TT + 7.57, which means I'd need to sell it at ~ TT + 8.4 on auction just to break even (with the .85 ped fee). A 42% success rate is typical for a maxed key BP with QR 27. I think all the formulas are correct but if you see anything you think is an error, or if you see a better way to calculate something, please let me know.