Ooni stuff is way overpriced and not the best. I got a turning peel (which also works great for removing pizza from oven) and nice brush for about $40 total from Amazon.
Brush head without handle ($13): Bristles 4004 Industrial Strength... https://www.amazon.com/dp/B01N5FR8KX
I took the scraper off and trimmed the corners so it fit the oven better.
Turning peel with short handle that I replaced ($19):. Round Perforated Pizza Peel... https://www.amazon.com/dp/B08THSV3S2
Wood broom handle I cut in half, sanded off the finish and put on the two items above ($7):. Rubbermaid Commercial Products... https://www.amazon.com/dp/B005KDD0KY
You can find third party accessories that are just fine. The basics you need, in my opinion, are peels for launching and pulling, a rotating peel and a thermometer. Below are not the exact products I use, but they are basically the same. Make sure to size them for your oven and do your own research!