My shells are all marine from Asia . Most of them are very large and heavy 500g -1.5kg . Most are A1 , but some show some minor natural damage (mainly the tips of the appendages chipped or scuffed from them living for upto 10 years ) which I can offer at a reduced price .
Like some beetles, the price of shells goes up rapidly with increasing size , reflecting the relative scarcity of larger specimens.
As they are generally quite expensive , I will send you photos of the individual specimen that you will be buying ,before you purchase.