You can now buy cards by batch directly from steemmonsters.com via 's SteemPlus plugin.
The extension is available on Chrome, Opera and Firefox (see installation instructions below).
Batch Buys from the market
Once the extension installed/updated, navigate to our market as usual and select a card to buy.
SteemPlus will modify the UI to enable the Batch Buys :
From there, you can either handpick the cards you want to buy, or use one of the four filters on the bottom of the page : All, None, X Cheapest cards or Up to X$.

You will then be redirected to a SteemConnect page to validate the transaction. SteemPlus will add Steem Keychain compatibility soon.
Note that the transfers might fail if the memo is too long (more than 45 cards at a time).
For more information, see the corresponding SteemPlus article.
Buy packs directly from Steemit
Starters and booster packs can also be bought directly from Steemit via SteemPlus.
For using this feature, simply go to your own profile and click on the Steem Monsters tab:
For more information, see the corresponding SteemPlus article.
SPP
You will earn SteemPlus Points every time you buy packs or cards from the market. These SPP will grant you votes and will be redeemable for premium features later on.
Installation and updates
You can download and install SteemPlus directly from the Chrome Store if you are using Chrome or Firefox(follow this link for Chrome, this one for Firefox ).
For installation procedures on Opera, please check SteemPlus documentation.
Updates shouls occur automatically. If not, click right on the extension logo > Manage my extensions > Update.
If you like SteemPlus, consider voting for s witness.