Try eBay. There is a guy there who lists red mangroves 10 shoots for about $10 + shipping. All have roots. I have ordered from him and the plants are always healthy. I have about 5 extra from the last time I ordered I'd sell ya if you are interested. E-mail me
Well, your profile does not tell us where you are. If you are in New England you might stop by Inland Reef Aquaria in Nashua. They have a nice little tank of mangroves last I was there.
i just ordered some from www.mangroves4sale.tripod.com i have not received them yet so i will let ya know how they are when they get here. they definately have the best prices...