Yes, currency transfer is the best method - first time is a bit of a leap in the dark but I've used them lots now and even done a reverse transfer for a Megabad refund!
Read my post earlier to understand the sequencing and ensure you don't get caught out with fluctuations in the ex rate.
We found Reuters good for recommending additional products, however we did get caught out over the Geberit system - missed out the bolts that fix the frames to the wall (had to buy on Amazon in a last minute panic) and we also screwed up on the flush plates, only buying the insert initially and then realising that we needed the tile in box also. It was too late for two of the bathrooms as we'd already tiled, but exchanging them was easy and we got the clip over variety for those two rooms. They seem to have discontinued this two part system now
Managed to get it right for the ensuite and downstairs WC which just got finished this week when the splash back glass was installed. Wasn't able to get a tight fit around the flush plate as internal cuts in glass have 6mm min radius - could have done it as four pieces of glass I suppose to get a sharper edge. Anyway, I sourced a matching silicone for around the pan and flush plate - fairly invisible unless you get super close.