engagement ring help 😌

so my bf has said several times that he is now ready to pop the question ☺️ we've been together 5 and a half years. well, I want something cute to have on my finger, but also don't want him to spend some crazy amount of money on the ring. I just want something simple (all the jewellery I have is simple). so I want to give him some clues. can you suggest me some online shops where I can see different affordable rings? thank you :)