@Baa this might be useful to you
https://support.amiami.com/hc/en-us/categories/360001008911-Payment-Shipping
i'm sorry you can't use EMS, it's a great balance between cost and fast shipping. DHL, from what I've heard, can be anywhere from a little bit more expensive to a lot more expensive. some people say it's less expensive than EMS. it's probably dependent on where you live. i don't think it would be £90 though regardless, i wouldn't expect your shipping to be that high with any method. the fumos are super light, so you shouldn't be too freaked out about shipping costs.
if you ARE really freaked out about shipping costs, then the link above does have a page that shows you pretty good price estimates for surface parcel, which likely won't be more than 2000 yen. that would be the much better option if you're worried about shipping costs, although it will obviously take longer to get to you it is definitely the safer option. that's what i went with when i got my flandre scarlet figure and it took a while to get to me but i didn't have a whole lot of money at the time, so i wanted to make sure it wouldn't cost too much.
@Baa i said surface parcel likely wouldn't be above 2000 yen, not DHL. no idea how much DHL will be but it will probably be more than that if i had to guess. not £90 though, that would be totally ridiculous.
(surface parcel is the 1-3 month wait time one)
2000 yen seems pretty reasonable I'll give DHL a try