If you were paying $90 for 1TB drives earlier this year, you were paying way too much for them.
Before the flooding really started wreaking havoc on the supply chain, 1TB mainstream drives were regularly available for $50. 500GB drives were day to day at $40, hitting $30 occasionally, and bottomed out at $25. Now the cheapest 500GB drive on Newegg is $100+shipping. That's an increase of 250% for a single part and the extra $60 now represents a 20% increase in the cost of my most popular $300 budget build.
Every single online retailer I've looked at has a big fat LIMIT 1 on every internal hard drive. For those of us who build systems, that's a pain in the ass. No, it's not the same as being totally out of stock, but it's inconvenient. A 20% increase in total system cost is very aggravating.
Just because a $50 increase for the cost of your annual upgrade isn't a big deal to you, doesn't mean it's not a big deal to other people.