expensive and not the Reisser

I've brought cheap Zopfgummis in the same design, I like better from the colors here and me, even though I already wear forever not even broke
However, the invisibubble me torn after only two weeks, no idea whether I had bad luck, got stupid pulled off or there was a manufacturing defect
my friend I paid another hat-trick, she's sleeping with that thing and has zero problems, their are very :)
However, so probably a matter of opinion of others :) I wear also holds for some time!
would I buy for a price eventually but in the store :)