Purpose fulfilling window hooks

I bought this window hooks for attaching bamboo blinds on windows.
Before that, I use similar plastic. The difference was immediately noticeable. Plastic is broken by the weight of the blinds, or by the mounting and removing the blinds and then crashed down / -gerissen. Metal holds better here.

I am very satisfied and would recommend this hook.

However, I have not needed just 10 pieces ... but I have not seen, about 60 cents a hook to pay more then the 4-pack! Would be nice if you slightly adjusts the price here, because such an increase I think is exaggerated.