Who the hell pays to get a discount?
I just wait and the games get cheaper and by the time that happens the discount you get on them is just a dollar or two which isn't enough to make it a big deal. So yeah you get a discount on a 60 dollar game but I end up paying 30 or less simply by waiting a couple months and I don't have to pay for it.
The $30 ($15/year) isn't too bad. I don't believe I'm getting the $30 offer because I let my @GAMER expire like 2 years ago. However for $30 I'm sure I would get my money's worth. Especially if the 20% stacks even when the games are discounted, which I believe it does (so $20 game becomes $16 game). It wouldn't take much to get $30 worth of savings.
But they are damn crazy if they think I'll pay $120 up front. That will NEVER happen. I'll just wait for discounts on PSN+ or other places (which can be better) before I join Best Buy's overpriced "club".