That's not a good price for an unknown blank. For a few dollars more you could buy a used Seeker or Calstar and know exactly what you are getting. You may even be able to get a brand new Okuma rail rod for that price, or even less.
Interesting if theyre rainshadows then great. Theres another large company that produces most of the chinese blanks it all depends if theyre 1st rated blanks or not. QC is really important as well as materials. U dont want the rod snapping on ur personal best. If ur looking for a good inexpensive railrod look into the graftech theyre really nice with good components for 240 or less.