I am averaging the market and eve echoes isk lowest sell because on average the market column seems to be inflated and so the typical seems to give more accurate results. Of course all of these are estimates and your mileage may vary based upon the local market in your town. I will continue to keep an eye on the costs and adjust the calculations when there appears to be greater pattern.

Is it possible to create some type of filter here to drop from calculation ores that I do not have wide access to? For example, if I constantly mine pyroxeres, discard it in the sheet and then rely only on other ores while calculating m3 efficiency.Ooo that's actually a fantastic idea, I can't promise anything but I will definitely look into that!

I would also include the Eve Lowest Compare price. The market is very competitive and items generally do not sell in the Eve-Echoes-Market cost. Also some things have a 3-4 hour window until they are updated. Since the sector is very volatile it makes for list the right prices difficult without needing to start the market page to look at the current competitive selling cost.

I'm using the average of the market and cheapest sell columns since this seems to provide the best overall results. The issue with just choosing the cheapest sell is that it makes it effortless for a single person to attempt to steer the marketplace by selling just one item with a very low cost. Remember that this tool will only give you quotes and you should verify pricing prior to making conclusions. I will keep an eye on the prices and adjust the weights if things seem not to be working well.

Definitely. I utilized lowest market last couple days and it is not a good indicator of overall market price. Yes it could be at that price during a few hours due to individuals selling competing or off but generally the market goes thru ups/downs due to supply/demand. Taking the average between lowest and market cost is not to great either for items that are volatile that have big swings. With ships the costs most likely don't swing as much but that I haven't watched the marketplace on boats.

Either I discovered another bug, or I'm seriously confused: when I increase the substance efficiency I'd anticipate the amount of materials necessary to return, but they don't, they go up.I have a tendency to agree with you but that is actually how it works in sport. You can imagine it as the reverse. When you begin the game unskilled you need to use 150% resources to produce a component. So it is going to actually cost 50 percent over base cost due to a lack of skill. Eventually by training up you can get below 100% so that cheap eve isk you receive a discount on your base part requirements.