By the time you buy a 10 year old $10 rod and strip it down, rebuild it, and get it to where you want it you are going to have just as much in it as you would just buying a cheap rod at walmart. You aren't going to find any <10 year old good rods for $10. If you do, just sell them and make a few bucks to put towards a great rod. I've got a garage full of rods I will sell you for $10 each, all less than 10 years old, all junk.
I'd rather have a good blank with cheap guides than great guides on a worthless blank.