I absolutely recommend Penguin's Card Club.
I'm more of a playing card collector than I am
a serious magician or cardician, although I do enjoy dabbling in both. As a collector, I already
acquire a large number of decks each month.
Penguin's Card Club sends me four decks per
month, and pretty much every month I get one or two decks I was curious about but passed up on
during their initial release (usually because of price), I get one or two decks I already have and
very much like (and so, don't mind getting a redundant back-up), and then one or two decks that
hadn't even occurred to me to pick up (possibly didn't even know about) but that are nonetheless
nice additions to the collection. The price per deck ends up being quite reasonable.
From
time to time, you even get a preview of a deck you didn't even know was coming. June 2016's edition
included the new Westminster deck, for example, and the Black Honeybee, which hasn't even been
formally announced, yet.
All-in-all, I find this to be a great value.