Sorry to be posting many many moons later, but I recently had a friendly nudge from a fellow LTH member reminding me to update this thread, so here I am!
First of all, I just wanted to say THANK YOU for all of these great suggestions (I know I messaged a few of you specifically, but thanks to all, just the same!).
After poking around on Devon, H-Mart and calling Fabian Seafood, I ended up going with the
Louisiana Crawfish Company, as many here have suggested and was THRILLED with their service. I had 14 pounds of live crawfish delivered fresh to my door for $65, including a flat $10 shipping fee. I would say 90-95% were alive upon opening the crate. The customer service was on-point, and I was really happy with my decision.
I was having the shindig on a Saturday, but if you were looking for a Friday party, their $10 shipping fee was waved for a Thursday delivery (at least it was when I ordered!). Finally, if you simply google "Louisiana Crawfish Company Coupon" I also found a 10% off coupon through Retailmetnot, which was awesome.
All in all, I found the price, service and ease of which to buy these little buggers was phenomenal through LCC, and would highly recommend using them if and when the time arises!
Thanks again, all!