nope new panels price as sold by all the installers which are the only people that can install in accordance with the law WERE (2013) running ¥120,000 to ¥170,000 per panel I have not priced since then.
At that time ¥/$ was about 97/1.00 thats what it cost per panel from the installers on my main hosue and we chose the panasonics as they were cheaper than the imports.
Japan charges serious tariffs on anything that endangers their local manufactures.... they do not allow china to dump shit on them like the US and other countries do.
if they do not charge tarriffs, then they charge various other fees to make up for it. and example is for cars, no import tariffs, sales tax only which is 10% and sounds reasonable.... but they also have an initial gas qualification testing for all vehicles, that costs from2500 up to 6k USD its where they take the car and measure its bore and stroke, record all of its emissions equipment and then test it for japan emissions. it fails, then you are out of 6k. it passes, you can get it plated... you can modify and retest as many times as you want to pay the 6k.
this protects the entire motor industry.
once its past emissions... some vehicles depending upon the vehicles weight, and its gross cargo capacity have to get a brake check. this is 2 million yen regardless of country of orgin.... 2 million yen to prove that its brakes will stop the vehicle with the load it is rated for in accordance with japanese specs, which are not the same as anybody elses... pass you can register, don't pass and once again you can take it as many times as you want and are willing to pay for.
this protects specifically the truck industry. Volvo and Ford and Mercedes were the target here...Volvo for large trucks and Ford for the F series and Mercedes for sprinter styles cargo vans. but it involves any that meet the weight targets... one annoying exception carved out was the hummer H1/ H2 I would guess that some politician had a finger in the pie for importing them so he carved out an exemption claiming that they were not cargo styled vehicles.
lastly, the noise inspection: this measure the noise made by the vehicle while driving around a set course and measure the sound of the tires, exhaust and "wind noise's" this test is about ¥165,000 or 1600 us at one to one hundred. as before you fail , no registration... you pass you can register... and yes you can modify and try again as many times a you are willing to pay for the test.
this protects spots cars, and motorcycles (Harley Davidson, and Aprilo were the targets here by the way).
so yes it costs to live in Japan if you want to play. the way around this is self importation you can skip a lot of the BS this way, but you cannot tie anything into the grid that is not approved.... what do you think your chances are of getting an inverter, SCC, panels that you imported approved? The people that sell these things will shoot it down, even if its the exact same thing they are selling... they will simply claim that their item has a propriety feature that the ones you imported in did not.... (its true, your gear did not grease the correct palms). as such stuff brought in on your own is regulated to DIY off grid only. that's why I do not flinch at using top of the line gear... if I cam going to jump through freaking hurdles and hoops to get something that is not offered here, I am going to go for the best I can afford and not dick around with it.