Do you any good websites I can trust to buy some stationary?

Hello! My favourite places to buy stationery are etsy (usually pretty trustworthy and people can review them!), eBay (people can review them too!), Notemaker, JetPens, amazon, and of course the most amazing place ever, kikki.K 

And if I lived in the UK I would probably spend a lot of money at Paperchase

I hope this helps!