Plenty of folks buy shrimp online, myself included. I've purchased 5 batches of shrimp online with very few issues. My first purchase was 10 RCS off ebay by priority mail - I received 12 in great shape. There are many very reputable sellers on here that you could get healthy RCS from.
I don't think you're going to find anyone who will tell you that they will survive those conditions for sure. I think it's entirely possible that they'll be fine, but it's also entirely possible that they won't make it.
I don't think you're going to find anyone who will tell you that they will survive those conditions for sure. I think it's entirely possible that they'll be fine, but it's also entirely possible that they won't make it.