Actually, I have one sealed bag (50lbs). The other bag is opened and half full and I'd like to hang onto that for another project. You're welcome to the full bag, although shipping is going to be absurd for a $4 bag of sand. Your call. If you want it, it's yours.
Have you checked with the local HD about ordering some? There's a SKU# for southdown you could find by searching a few reef boards. Maybe they can have a pallet brought in (they'll probably tell you no at first, but other non-East Coasters have been able to arrange this). Just an FYI- the stuff is tough to get this time of year, even around here. I went to 5 stores before I found some. It's considered a seasonal item.
If you do want me to ship, what I would suggest doing first before blowing all that money, is place a wanted ad on Reef Central. Higher volume there, you may get lucky and find someone local who has extra. Let me know.