Wow that's so cool. I'd love to buy a board from an actual shop instead of off the Internet.
I got my board from Kurokigoishi and stones too.
I paid about £100-150 to ship a package that was about 15 kilos. This is all worked out through Kurokigoishi's online shop automatically. I also had to pay import VAT and duty. This was maybe another £120.
If you buy in Tokyo you are required to declare the purchases at Canadian customs, no? I don't know how the system differs from the UK.
So it might be not too different in cost compared to buying it online.
Maybe you can take the tags off clothes but a Go board is a bit harder to smuggle
As for the description of the off-spec products (I assume that this is what you mean by off-pieces?) they seem very thorough. I can't comment on how they are though. I doubt they would sell it if they weren't happy. Just be aware about what you're actually buying.
The exchange rate isn't as good now as it was last year. Also, Kurokigoishi put their clamshell prices up at the start of the year. That's why they do their Blue Label range, again can't comment on these.
I would still think that for your budget you could get a nice multi-piece construction honkaya / hyugakaya table board, clamshell stones and cheap cherry or chestnut bowls. I have the cherry ones and they are lovely.
If you want a single piece thick table board you might have to stick with glass stones. There are some very nice glass stones out there. EdLee mentioned these ones that kind of had a sparkle like how glass is when it shatters, they sounded fascinating.
You probably won't get a kaya floor board on your budget. However you can probably get a nice spruce board. Just be aware that they do look deceptively thick on photos because they are taken at an angle.
Also, be aware of the difference in cut. You can have a kiura board next to a tenchimasa board and one costs 10 times as much as the other. My board is oimasa. They generally go tenchimasa > masame > oimasa > kiura / kiomote.