@X_true
The membership boasts a 20 percent discount on new cards for the 1st 10 days upon release [wasn't this already a thing before premium or was it 15percent?]
No, just the opposite in fact.
With Premium you get an extra 20% of the newest cards if you buy them within 10 days of their release. Without it you do not get, and never got, a discount on newly released cards - indeed cards were (and still are) excluded from almost all special offers for the first 45 days. I am not sure how long a card had to be released for before it could be offered with a discount via the preview push system but even if there was no built in delay you could not be certain of getting a discount on any particular card. With Premium membership the inital 10 day discount is guarenteed.
So all in all, would you guys also agree that premium is only worth it for folks that have certain buying trends?
This is correct. In general Premium membership is not worth the cost unless either you buy a
lot of the newly released cards per year (for triple diamond that means more than 200 or so, for lower level members the number is a bit lower but still large) or if you think that access to the 4k resolution is worth the extra cost. The discounts on the VR shows and a couple of other ***** things may tip the balance in borderline cases,