Some places in the fall, like WeGo Tackle Shop in Southold or White's in Greenport, will carry them for about $5.00/doz., which is quite steep when you consider that many days 10 - 12 doz. is just an adequate supply for 2 - 3 anglers. I have found the only reliable way to obtain them is to invest in scallop dredges and harvest your own. It is hard and dirty work, but it is fun too. I have only dredged in L.I. Sound in the 20 - 30 ft. sandbar/open bottom areas. The spring (May)is usually a better dredge time. If you get a generous supply from a lobsterman, they can be frozen. Deshell them and place 25 - 30 in baggies with a good am't of kosher salt. (This is particularly effective during the colder mos. when time and temperature is more of a factor.)Just thaw before using. On some days this lengthy and laborious effort is more than worth it. Man, I can feel them bulldogs tuggin' just thinkin' about 'em!!