Without it sounding like im having a go or starting something lol I feel like that's totally the wrong mindset as you said the onus is on you and just because you see a deal doesnt mean you lose all normal thought process and just buy something alive on a whim. That goes with anything really not just clams.Would be nice if vendors and LFS added a bit of influence here too, even if just a sign next to clams for sale or disclaimer on every checkout page with clams. Onus is on us, of course, but would be nice when you see a great sale (bought my crocea for $65 on sale from $150) for a reminder/notice to stop and think, "am I ready for this?".
Why would a reminder be needed before buying if at a minimum you should be asking the lfs about the animal and its needs before purchasing.
At the end of the day ultimately you cant rely on others its up to you to decide if your ready for a clam having done the research yourself prior to purchasing.
Again not having a go just my opinion on that.