Prime, Platinum, Whatever... ?

Never bothered. Closest I came was way back in the day when Digiport had a membership thing... almost did that one.

II mostly make my own stuff these days, or repurpose older stuff... I make enough to buy what I want when the mood strikes otherwise.

Now if by chance I started buying stuff on the regular, and regular enough to justify the additional expense, then sure, it would make sense. As it is, I don't, so it doesn't.