You sure may! I purchased it in a 1 gallon pot from my local Home Depot for about $16. I believe that HiddenValleyHibiscus.com sells them as well, although it may be a lot cheaper just to go to your local HD like I did.
This is the NEATEST plant! Thanks for the compliments on it, although I don't know how much credit I can take! I just planted it, fertilized it and am watching it grow!!