That 512GB link for me (in the UK) is well over £100 (4.67GB per £)* - I had made my quick judgement (my apologies) based on that compared to Sandisk's Ultra 400GB (5.48GB per £) though I now see that they can be had noticeably cheaper -
https://www.amazon.co.uk/Lexar-High...micro+sdhc&qid=1598392104&s=computers&sr=1-26 (ie 5.76GB per £) which is definitely better than the given link though I'll probably go for the Sandisk given that it's down to £48.99, or 8.16GB per £, in their sale (£15.99 for a Sandisk Ultra 128GB). I did see though that the Lexar might actually be as fast as the Sandisk Extreme
*thanks to taxes, I normally look at USD as equalling GBP - sad times.