I don't remember eating lobster. I had an invitation by the former owner of this board, but we missed twice and after that events took different courses. In hindsight, it might have been beneficial for met not to get to know him closer (see comments by others on the subject; although I can't say anything bad about him from personal encounters, other than that he didn't offer me a piece of cake when he had two and I had none).
I remember seeing plenty of big crustaceans (I can't distinguish them better) on restaurants in walking street, where I would expect mediocre food at food at premium prices (and see points raised by others about origin and freshness).
On a recent trip to Phuket, I saw lobster in a foodcourt (!!!): http://christianpfc.blogspot.com/201...29nov2016.html
On the subject of seafood freshness and prices, in a restaurant on the shore in Prachuap Khiri Kan town I had 10 oysters (local, smaller than European) for 100 Baht. Yes, ten oysters for one hundred Baht! 100 km north, in Hua Hin, the same oysters on the same seashore would probably cost tenfold.
On the subject of how to eat crustaceans, I have given up on crab. The few times I had meals with crab, the taste did not justify the price and the effort to get the meat out of the shell.