Hey Man, I'm from North Florida and I have the same problem with finding apple wood. I don't know if it is the same but I have started using unsweetened apple juice in my smoker along with oak wood to give the meat that sweet apple taste. Like I said I don't know if it's the same but it could be worth a try.
your post made me think of a question, I have several 5 gallon buckets of Maple , Oak, Cherry, and walnut. I currently have them stacked and stored in the garage. Is there a better place to keep the wood for smoking?
Pecan wood you can pick up off the ground from North Florida well into Georgia. Why pay for it? I make trips to NC several times a year and was surprise to see little to no woods being sold commercially in Georgia. Still the same standard Mesquite and Hickory that you see in all Wal-marts. Any apple I found were only small bags of chips. Good luck with looking for it. I will check with R&A on the next trip north.