What episode is this from?
Thanks for your question. Sure it is okay to ask here, this community needs more active members.
As for your question: I also haven’t got a clue about worsted weight yarn as I am from Europe myself. So what I do is look for a similar gauge and buy whatever I like. Works out fine most of the time.
Yarn is expensive in large amounts and wool even more so. So 180€ seems normal-ish for this amount of wool. I am sure you could do cheaper than that but not too much. I would consider making the cardigan from cotton yarn, which is still gonna be expensive but probably less than 180€
Hope I could help!
I am not since I watched the latest season of rick and morty. Ahhh
And if you like dirk gently you will probably also like maniac
I will hand in my thesis and I’ll finally be done with this and have a degree wohoo