What you want is not the cheapest tire, but the best tire for the least amount of money. Remember, that tire is carrying your life. One thing to watch out for is sometimes those cheap tires just don't last as long. They may be a softer composition and will wear a lot faster then a harder composition tire.
On and about those nails? Be sure and add RideOn to your tires. It will handle those nails you may pick up and help keep your tire balanced.
Nothin worse then a nail in a brand new tire!
Patriot Guard Rider
2000 VN750 Sere (Serendipity)
1990 GL1500 (Ole Blue)
1986 VN750 EVie (project bike, heavy custom)
VROC # 11628 / 25000-H
ARVROC # 12 Coordinator and Crowd Control
OKVROC # 18 (H)
TNVROC # 45 (H)