Mike, They did this a few weeks ago as well when I first heard it was at £14.99. When I looked it had gone up to £60. It seems if they sell what they have in stock, 2 this morning when I brought mine, they then put the price up. I think you have to keep checking as I did. Reports on SH forum say the same.
Kevin, I am pretty certain as the release date at the bottom of the page is correct as 31st May 2019 and I don't know of another 2019 release and the increase in price that Mike refers to would seem to confirm it. There site could be clearer on this point though. The Cornbread for instance is also at £14.99 but is not a Tone Poet.
I got a confirmation email at £14.99 for this one. I'll report back when I receive it.