Gemini scummy sale offer after student subscription ends

So I've had the offer flash in me multiple times now, 74 % off. The first two times the link didn't even lead anywhere. Yesterday it finally did, but it was right before I went to bed, so I read the offer. It said it's eligible to redeem until I think 28.2.2027... maybe the exact date is wrong but it was definitely 2027. So I think cool, I can get to it later. Today the offer is gone yet again, and I'm kinda getting fed up with it. I'm used to Gemini, especially due uni work I don't exactly want to change what I'm used to, but this scummy behaviour is seriously making me think I'd perhaps be better off migrating to Claude.