What's better ?

Not really as simple as that. Better in what way?

The answer is most likely somewhere in between.

Without any technical data always the cheaper variant

Neither. At some point you're getting really good quality for money, in case of mouses it's around 60$ + good company, like Logitech. The higher you go, the more you're paying for hype and marketing, less for product.

And if you need only something that works, you can spend even less than 10$ and still be happy.

if you smash your 10$ mouse, it dont hurt so much as 90$ one
right now i have 14,4$ one for 2 years....thats is pretty long for me (DPI button stop working, atleast i can change it by software)

You can get some really good mice for $10. You should only spend more if you need/want extra features.

Something around 50-60, in my opinion.

I bought a Dell mouse for work for $8. Liked it so much I bought another for home.

Been using $10 Logitech mice for many a year. In fact, I'm pretty sure I've been using this current one for about three or four years running now, and it's still working just as great as it did the day I bought it.

Well, the 10$ mouse is better for your wallet for sure... :P

9 X 10$ mouse. You buy the whole family.

Cheaper mouse if you don't plan on using the extra features of an expensive one much anyways.

Honestly tho I love my Razer Naga mouse, I bought it for $55 2 or 3 years ago, have used it often, and it's still going strong. :D knocks on wood I use it for mmos, mobas, and fps games so it has good use. Otherwise I'd just get a cheap mouse for the majority of steam games I play.

90, future proof

That really depends on the mouse itself. There are bad mouses in both cheap and expensive categories and there are also good mouses in both price categories.

For me, definitely 90.
90 mouse + 10 keyboard.

This mouse:

View attached image.

I had a mouse that was less then 10£ and it was crap. Got one fore 17£ and it is waaaay better but nothing will ever beat my old Logitech G9.
Yet I've got a pair of 15£ headphones and decided to upgrade then and found a pair for 35£ and turned out that they were horrible compared to my old ones.

A mouse for $36

Which one is better? Probably the one for $90.
Is $90 mouse worth it? That's a different question.

I use one that costs € 25. It's a great mouse, really comfortable and some extra buttons (double click, dpi and back and forward).

Освен ако нямаш намерение да се занимаваш професионално с някоя игра (разбира се само с мишка няма да стане) е напълно излишно да даваш повече от 20-30 лева за периферия (мишки, клавиатури)

I paid ~40$ for mine.

This really depends on a lot of personal things. For me, a 50-dollar mouse gets worn out as fast as a 10-dollar one, and since my hands are large, it is often terrible for me to have side-buttons as I cannot hold my thumb comfortably. So, in my case, I just stocked up on a bunch of Logitech RX 250 mice and use them.

probably mouse for $90, but you should find something between those price marks that fit your demands.

I ordered a 4000 dpi, 6 button, multi led corded mouse yesterday for 6$ shipped.

View attached image.