Gee, that reply was kind of unhelpful.
Aptasia is a problem and depending on how much is on the rock, could be a deal-breaker for many. Nonetheless, good live rock is a valuable resource. Determining the value depends on the kind of rock you have (man-made that's become live, Carribean LR, Indo-Pacific LR, etc.) and things like how much life it has and coraline algae coverage. For instance, just today I bought several pieces of Marshall, Fiji and Tonga from a person breaking down a massive long-time system. I paid $5 a pound and counted myself lucky to get several nice show pieces of quality rock for this price.
At a bare minimum, assuming the LR isn't overrun w/ aptasia, you should be able to get a buck a pound for the rock.
I'd recommend you post a for-sale ad on your local reef community's website and on Craigslist, with a good description and several pictures.
Good luck.