I ordered mine from
https://www.ambrosiasys.com/
It's a US site so the price is in dollars. I don't think you can buy it anywhere else.
There was a customs charge when it was delivered, which is VAT plus £8 post office handling fee. You can reclaim the VAT part by writing to Border Force and stating that it's for the sole use of someone with diabetes and is used to monitor blood glucose continuously.
You don't need to order the Transam - just make sure the quantity is set to zero.
My daughter and I are really pleased with ours.
I think I might try in the new year. Just had to pay for a couple of sensors which has wiped me out a bit this month! Not holding out much hope for funding