As people have said, this is far too expensive.
- Playstation Plus works because it's (at most) £40 a year. This is ~£95.
- Most of the time the "top tier" in a weekly bundle is only $10 anyway, unless it's got a t shirt etc.
At risk of sounding like people in the Playstation Plus and Games with Gold threads, they'd need to offer a "AAA" game with this every month to make it appealing. Each month gets you a major title released last year (although likely has already been £5 in the previous year's winter sale), and 4 other indies.