Through the FC, requires membership and only ships to Japan, advantage, you get your name on the ticket and slightly higher chance at good seat, plus fixed price.
Through general sale, those you can actually buy from abroad as some of the places selling them as for example hmv allows to pick up at a Lawson branch, advantage, fixed price, your name on ticket, problem, often not really good seats.
You can also just buy those one you are in Japan though, so not much point ordering them.
Yahoo Auctions Japan, usually the cheapest way to get tickets unless there is a graduation or a similar excuse to pump up the price, problems, most sellers only ship to Japan, wrong name on ticket, advantage price.
Ticket resellers like Gorakudoh or Yokohama Tickets, Problems: often expensive, wrong name on ticket, advantage: you can just walk into a store, pay and have the ticket in your hand, plus they often still sell half decent tickets on the day of the concert, so great if you arrive the day before the concert or whatever.
In general if you want tickets for a H!P Concert you pay between 500 and 10000 yen, but don't expect super seats for 500
Buying through official means you pay roughly between 500 and 7000 yen, depends on the concert really.
At resellers like Gorakudoh or Yokohama tickets front row tickets often go for 20000 to 50000 yen, if there is a graduation that can increase to pretty much infinite, 100000+ has been paid for front row tickets at grads.
Joining the FC is a bit of a pain and takes a while as they still operate on the snail mail system, but if you plan to go to more than lets say 3 concerts a year its worth it, just my opinion.
If its just for one trip go with the resellers and opt for something like 3rd to 7th row, frankly its not that much worse than at the very front and doesn't cost too much, you can often find those tickets for 4 digit prices.
Links to maps where to find Gorakudoh and Yokohama Ticket (who are not actually in Yokohama despite their name lol)
http://gorakudoh.co.jp/tenpo-map.htm
http://www.yokohamat...zu-shinjuku.htm
http://www.yokohamat.../chizu-ueno.htm
http://www.yokohamat...izu-shibuya.htm
The name on the ticket thing isn't really a problem as H!P doesn't bother to check your passport to see if you are really the ticket owner, but kind of sucks in my opinion cause you can't really collect tickets with names of strangers, just feels weird.
Is there a way to get guaranteed good seats? officially no, in reality its up to how much cash you are willing to part with.
Some other stuff you'll want for the Concert: In winter, bottle of water, in summer, at least two of them. Get some Kingblade Max glowsticks, sure the throw away ones are cheaper, but you'll just end up going through a box of hundred to compensate and glue your own holders and whatever, Kingblade Max work out far cheaper and more convenient. Bring a change of clothes, its hot in concert halls and you ain't going to sit around bored, its like a work out













