Hello from York UK.
That's one sweet gift @mattbeels . 😀
I had a similar problem with stock of the 350S. Apparently its something to do with shipping being delayed out of China.
I think stocks are starting to drip through though. The place I've ordered mine from got 5 BS350s in just this week. I'm sure there will be some Sabres coming through soon.
Fingers crossed for you! 😀