Drag Slick Tubes.....whats the life spand???

I have new slick to replace my old worn out ones. Can i just swap the tubes onto the new slick.......or are they a one time, deal.

Just look up some new ones, WOW! there a lot more expensive then i remember them being.

On that note, any body now were i can get tubes cheaper the $65 each!

Slick is a 26X10X15