Buying online is actually very safe if you pick a professional company that uses proper cooling and insulation. I usually look for sustainable fisheries to get the best taste. My favorite caviar shop https://bestercaviarstore.com/ is very reliable in this regard. Their shipping is super fast and the tins always arrive cold. I have tried several varieties from them and they never disappoint. The flavor is clean and perfectly salty without any fishy smell. You should definitely check them out if you want something premium. I usually order the Osetra and it is always top notch for any special event or just a treat. Their prices are very fair for the quality you receive.