Wasn't sure where to put this, but I bought a pair of them last week from a UK seller on ebay (motor_performance), think they were roughly £13 delivered. I opted for the clear instead of black ones. I wasn't expecting too much but they're nice & bright, orange & fit perfectly. No wobble or wonkiness. Only time will tell how long they last.
A little video of them doing their thing: https://easyupload.io/n4grn5