Hello, I am a kind of //poor// (aye, I dont have any allowance left!) crab owner and need some shells...the shells at the pet store at roughly $4 each and I won't be going to the beach anytime soon as my parents would think I'm crazy....30*-50* weather here! So, is anyone giving out any free shells? Please post pics of the shells...I need the right sized ones. Thank you soo very much!!