Shipping is definitely the killer when buying from Jauce or 'From Japan', at least it is to the UK. You do get benefits of scale if you bundle several auction wins together but even then a lot will depend on what you win. The shipping cost tends to go up with weight and size of the item(s) you win and can sometimes be considerably more than the auction cost + other charges.
So as far as I'm concerned the only things I buy from the japanese auctions are either things I can get anywhere else, are incredibly cheaper than I can get them here and preferably small/light - although invariably something that is good value may not be small or light lol!
But either way expect to pay considerably for items, just a couple of wagons is definitely not worth it I would say unless you get them for next to nothing or you really really need/want the item(s)!!!
So as far as I'm concerned the only things I buy from the japanese auctions are either things I can get anywhere else, are incredibly cheaper than I can get them here and preferably small/light - although invariably something that is good value may not be small or light lol!
But either way expect to pay considerably for items, just a couple of wagons is definitely not worth it I would say unless you get them for next to nothing or you really really need/want the item(s)!!!
Happily collecting things all my life... 
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