Cards don't get sent to your Steemit wallet. They appear in your collection on the offical Steem-monster webpage linked in the topic post.

so we cannot recover money onc we invested in steemmonsters ???

You can sell your cards on the market that is listed on the official @steemmonsters page. You could also do a private sale and use the gift function to transfer your card to who-ever purchased it.

guide me how i purchase my first booster pack ??

Alpha Booster packs are all sold out. You will have to wait for the release of the Beta Booster Packs. Click the Packs link at the top of the official Steem-Monsters webpage and you will see a Sold Out Message. Keep checking that section for the Beta Booster Pack release.

To purchase the starter pack simply go to log in and the starter pack will cost you $5 USD. Paypal / Credit Card / Steem / SBD and possibly other can be used for payment methods. If you not logged in or need a Steemit account it will cost you $10 USD.

so iam late !

Yes and No .... game play has not started yet. You are only late to buy Alpha booster packs. Beta booster packs will be released soon. You can still buy Alpha single cards from private sellers in the market on the official webpage.