Is it just me, or are prices not showing for mobos and some gpus??
yeah, thats normal. it means that those parts are not being stocked by anybody anymore or they are currently just not in stock anywhere.
Just like Bucketofcrud12 said, but sometimes there is a error. If you see a error goto Request Part Additions / Corrections Here in the forums and report it, and most of the time the admins will get it fixed.