I have downloaded the latest prices and post results by updating this message.

I however wonder whether I have right prices (or where else an error could be) because while RVG_Spike_duplex looks reasonable (e.g., cost=408200/RC=3.11 for the head), the prices for Haru_E3_Komachi look strange. The Haru_E3_Komachi set consists of always of 4 waggons: head (1200 kW, cost=12400, RC=0.11), mid (1200 kW, cost=202900, RC=1.68), trailer (just passangers, cost=44420, RC=0.53), rear (1200 kW, cost=30400, RC=0.25). This results in very low cost on front and rear engines and very low RC altogether, but you reported this engine as the one with increased cost. At the same time, this train does not make all that much profit so it is not like it could bear high RC cost.

* RVg_Spike_Duplex train of total length 12 running on average 90-95% full on the best track of a relatively short length (it cannot go too fast - max. 220 km/h - and mileage per year is kept reasonable) has in year 2050 with the new cost structure 6.4 years payback (Price ~ 1.6 mil., Profit-RC ~ 325 th., maintanance ~ 75 th.). This looks fine as it does not deviate much the locs tested in 1930s.

* Thunder train set up in the same way as RV_Spike_Duplex above (although 12 is too short for this train), 90% full on average in 2050 etc. resulted in 7 years payback despite rel. short length and very high purchasing cost (2.5 mil.) because it accelarates and goes faster.

* RVg_thunder_2: compared to Thunder_(front engine) and Thunder_(rear_engine) in the previous point, it is cheaper (440 th. instead of 791 th.), it is more powerful (7700 kW instead of 4900 kW per engine), it is faster (370 km/h instead of 250 km/h) and it has lower RC (13.54 instead of 18.53 per train of length 12). The question is why - why some much cheaper and lower RC when it is more powerful and faster?

* RVg_M1: again the same setup as before with trains of length 12, etc. Here one sees a strong effect of speed bonus. At 2010, the payback in years would 4.5 (train of length 12 earning 175000 per year). The number is OK I think because it looks like a regional train, so in practice trains would be shorter than 12 (although the train runs fine also at this length). In year 2050, the train running almost always 100% full earns about 75000 per year after subtracting the running cost. Because it costs about 550000, its payback would be 10-15 year depending upon how many trains share the maintanance cost.

* to be re-tested, payback years will go up ~~SBB_Re460 with 11 waggons of the same speed (Marks_passagierwagen), year 2050, running 90% full as in previous test, payback in year is 4.7 because of relatively small RC of the train (but that comes from waggons as the standard passanger train cars have lower RC than the special train cars used in high speed trains).~~

* to be re-tested, RC increased a lot ~~Haru_ACE1 train of length 12, year 2010 (20 years after its introduction, 10 year before being obsolete) with the setup as before has payback about 6.7 years (and smaller after its introduction) (yearly earnings after RC and maintanance subtracted ~ 300 ths., purchase cost ~ 2 mil.)~~

* Skoda151 with 11 72p-waggons of the same speed in year 2001 results in payback period around 7 years, one can however use also 100p-waggons without slowing the loc down or increasing the weight of the train, which would lead to a lower payback period.

* Skoda151 with 11 72p-waggons of the same speed in year 2001 results in payback period around 7 years, one can however use also 100p-waggons without slowing the loc down or increasing the weight of the train, which would lead to a lower payback period.

* DB_BR103_1 with 11 72p-waggons of the same speed in year 2001 results in payback period of 6 years (it is expensive, but also faster that Skoda151, so it gets higher speed bonus).

* RVg_Tigress of length 12, year 2050, price ~ 2.6 mil., profit per year - RC - maintanance ~ 430 ths., payback years ~ 6 years

* JR_700_Series_Shikansen_Hikari_Rail_Star of length 11 (longer waggons) in 2050 (tried because of different structure - every waggon has an engine), price ~ 2.7 mil., profit per year - RC - maintanance ~ 230 ths., payback years ~ 11.7 years; the same in year 2010 (to check speed bonus effect): price ~ 2.7 mil., profit per year - RC - maintanance ~ 320 ths., payback years ~ 8.5 years. This is generally more than for the trains consisting of fixed number of engines and waggons without engines.