I had similar stands (Deer Creek Audio) for my JBL 4319s and they worked wonderfully for years until I tried them with the tweeter better aligned with my ears. They were placed on some Wharfedale Litton speaker stands firing straight at me and boy, did it make a big difference.
The problem with the 5° stands was my room. I needed about another 2 feet to properly align the tweeter with my ears and I couldn't move back any further. You may not have the same issues as the friend I sold them to, with my JBLs, loves the way they sound in his larger room.
If those are made as well as the Deer Creek Audio stands, then the price is decent as the Deer Creek Audio stands command more money used than new. I paid about $330 for mine and have seen them going for $500 to $700 on eBay.
All the best,
Nonoise