Aftermarket shock replacements

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Hey guys

I'm new here because i am a car enthousiast but i don't have any experience with wrenching on them.
Now my '92 Rocky recently failed inspection due to the shocks being blown so i want to replace them.
The cheapest route would be to buy shocks used but who knows how long they are going to last.
This meant that i started looking for aftermarket options but doing some research ended up in me being even more confused in the end.
I've seen shocks going for €30 a piece all the way to €150 a piece so i have no idea what to buy. I was also worrying about buying aftermarket shocks due to the sizing of them and i can't seem to find shocks for my specific car on websites that i am willing to trust.

Thanks in advance guys