Awesome looking but WHOA prices: 558,600¥ for the 10 cars E5!
Welcome to the world of HO scale "collecting" (I don't call it modeling, as these will likely not be run on a layout). I was at a hobby shop last year, and a middle aged man came in, and made such a purchase of similar amount- in and out in 15 minutes. After he left, the proprietor of the shop was saying how thankful he was that such people are still around (王様の客- or a "kingly customer") though he also tipped his hat to the customers of more modest means who, for example, save up for months to purchase an N scale rolling stock set.