It's strange that with so many people bottling in longnecks, there's not more available. I store most of my beer on shelves in the basement, and just use a motley array of recycled 6-pack carriers for that. For moving bottles around during brewing operations, and for storage during conditioning, I found a 10 gal. plastic tote with lid at Menards (for those of you not in the Midwest it's like Lowe's, HD, Farm & Fleet, etc.) for 5.99. It will hold 32 bottles, and works well enough. Two totes for a batch, and I just have dummy capped bottles made up to take up the extra space so they don't fall over.
Sure wish I could find some of the old waxed 24 bottle returnable cases from back in the day, though....