Hi, I paid in British pounds 535. I paid via PayPal which always has a worse conversion rate. There was no extra tax I had to pay when it arrived. So it seems Flower Knows took care of this all.
I am missing quite a few items from mine as well. Did you have to contact them to get the missing items or were they just automatically shipped separately for not fitting in the box?
It turned out with bigger orders they are often shipped in several parcels. They all arrived in the end within a week. But if you have something missing after a while I would definitely check with customer service. I used them once to cancel an order as I ordered the wrong thing and they got back to me within half a day.