Large rare shell collection inherited need assistance

[Saja3]

Greetings shell collectors and enthusiest. A few years back I inherited a vast collection of shells. I really like to look at them ans have tried to get them identified many times so I can sell them at a reasonable price without totally gifting them away. Now I am for assistance. If anyone on this forum would like to lend me some knowledge on the names of these rare shells and a rough estimate of their worth I would greatly appreciate it. I have a vest collection. So I will do my best to carefully select the most exotic ones and photograph them individually. These shells are antique purchased many many years ago. I know they must be valuable as there is a single shell with a 200$ price tag attached to it.. if anyone is interested in buying I woild love to offer great prices that we would both be happy with. Again many thanks!