Pricing is being set wrong

[Rayvenhaus]

When I use the buyback portion of this program I am getting incorrect estimates. For example, using the following copy and paste from in game:

Helium Isotopes 420,696 Ice Product 12,620.88 m3 368,719,009.20 ISK
Hydrogen Fuel Block 15,000 Fuel Block 75,000 m3 295,357,050.00 ISK
Hydrogen Isotopes 1,083,599 Ice Product 32,507.97 m3 1,040,135,844.11 ISK
Liquid Ozone 42,500 Ice Product 17,000 m3 3,842,425.00 ISK
Nitrogen Isotopes 22,442 Ice Product 673.26 m3 16,426,870.74 ISK
Oxygen Isotopes 126,380 Ice Product 3,791.40 m3 135,581,727.80 ISK

I get an estimated value from AmSys of this:

Quantity	Item	Value
420,696	Helium Isotopes	394,957,188
15,000	Hydrogen Fuel Block	6,651,176,385
1,083,599	Hydrogen Isotopes	900,494,608
42,500	Liquid Ozone	3,354,355
22,442	Nitrogen Isotopes	14,966,783
126,380	Oxygen Isotopes	126,076,056

for a total of 8,091,014,229

where as evepraisal shows:

Qty	Item	Volume (m3)	Single (sell)Single (buy)	Total (sell)Total (buy)	ISK/m3 (sell)ISK/m3 (buy)
1,083,599	Hydrogen Isotopes	0.03	941.85 882.95	1,020,587,718.15 956,763,737.05	31,395.00 29,431.67
420,696	Helium Isotopes	0.03	1,050.00 988.21	441,730,800.00 415,735,994.16	35,000.00 32,940.33
15,000	Hydrogen Fuel Block	5	20,014.95 19,747.71	300,224,250.00 296,215,650.00	4,002.99 3,949.54
126,380	Oxygen Isotopes	0.03	1,137.99 1,050.18	143,819,176.20 132,721,748.40	37,933.00 35,006.00
22,442	Nitrogen Isotopes	0.03	727.95 702.12	16,336,653.90 15,756,977.04	24,265.00 23,404.00
42,500	Liquid Ozone	0.4	94.04 86.92	3,996,700.00 3,694,100.00	235.10 217.30
Total Volume:	141,593.51
Total Sell Value:	1,926,695,298.25
Total Buy Value:	1,820,888,206.65

That's a 6 to 7B difference.

[Aarondorn2]

We use a market API exposed by fuzzworks. Prices may differ slightly from evepraisal, but not that much.

The prices in the tool are VERY configurable. As such, I need a bit more info on your set up before I can diagnose what's going on. Also, it looks like most the difference is with Hydrogen Fuel Block. Can you enter Hydrogen Fuel Block into the Market Price Search box in the top left of your application (hit 'enter', select the block from the list) and click around on the hub tabs until you find a number highlighted in green (see below screenshot)? That will tell me what hub/statistic your configuration is using. I need to know both the hub (Jita in screenshot) and statistic (Percentile).