You will find that buying a scissor is almost overwhelming as there as so many different types to choose from.
You can find really good value scissors at AliExpress/Wish/Amazon/eBay – the downside is that it can take up to 8 weeks for them to arrive unless you pay extra.
I have scissors from AliExpress that cost me 25 euro and they are great and if you only do your own dog -then its no need to spend 150 euro on a scissor. I love my 200 euro scissors -but I do a lot of dogs each day and then it’s more important to have super quality. But someone that does one dog once every 8 weeks won’t need that super quality.
Just be aware that a 25 euro scissor from the pet shop or Mr Price wont have the same quality as the one you get direct from AliExpress as that scissor would be equal to a 10 euro scissor from them.