This is what I've found recently and I don't know if it's worth to keep, I don't know the GW economy very well....

Pronged Fan of Aptitude(Gold, req9 Inspiration Magic)
Halves Casting Inspr. 20%
Inscription +5 armor when enchanted

And

Exalted Aegis(req 9 tactics)
+1 Domination Magic (19%)


Any thoughts on these items?

Thanks very much