Value/Profit Calculation

Hello~

Had a few questions about the value and profit calculations as shown in the recipe lists for each individual item.

The value of a single item in a recipe seems to be calculated at 1/12 the avg price of a stack (which makes sense as most things are sold in stacks). Is this where the value is calculated from? If so, how often is it updated?

Often times i see a value that reflects neither the single item value nor the 1/12 stack value.

Lets take Coctrice meat On Caitsith for example: median price for a single is 1000gil. 1/12 stack price is actually 1083gil. However, the value is listed at only 955. The synth is calculated as being profitable when it actually may not be.

Now, 5~100 gil difference isn't such a big deal, but other synths have great variances of thousands of gil. In an extreme example; Bememoth leather is valued at 950,000 in recipes but actually sells for a median average of 1,200,000. As a result it lists at a profit of 274,000gil per synth when 24,000 profit is really more accurate. At least it's not a loss!

Anyway, I'm not sure why this discrepancy occurs. I'm guessing its the difficulty of coding a calculation that takes both singles and stacks into account and weighing them appropriately. Or perhaps the coding is perfect and it simply updates more slowly than the individual sales, leading to differences as prices change.

Anyway, i love this feature of this site. Of course i can (and do) go back and recalculate each ingredient individually to be sure the synth is actually a profit for me, but i could also sit on the ah and check all the prices and do the whole process from scratch. Is there anyway to make the value/profit calculation for recipes more accurate?

I could be just misinterpreting the data as well. If I am, any tips on how to more accurately use this great tool on this site?

Thanks!

The discrepancy happens because the median value used for computing the profit/loss calculations is calculated and partitioned off different time intervals than the value displayed on the individual item pages. This is because while calculating median values in real-time for a single item off a single user request is not terribly intensive, generating median values across potentially thousands of items at once to display the synthing charts, every time a user requested those pages, would bring the database server to its knees. So the top-level profit/loss calculations can frequently lag in absolute accuracy by a day or more, rather than going to each page manually and calculating it yourself off the most current info.

Ah ok, yeah i kinda figured it must be something along those lines. I'll just keep using it as a general "divining rod", but then really crunch the up to the minute numbers myself.

Again, love this feature^^

Would have been nice if NPC value was used instead of AH value for items commonly sold by NPCs....

2546 days since this thread was posted in. That has to be a record, right?

OMG, 7y necro.

You searching dead threads to necro, admit it!

/Run Away

Holy ***. I was a teenager when this thread got posted.