My dad found a copy online of Once A Runner for a reasonable price. It was expensive, but not over $100 I think.
I actually got it for something like $35. At the time I found 4 or 5 copies for sale online, and they were all around $100 except for the one. My favorite books are "Lactate Lift-off" and "Underground Secrets to Faster Running." Right now I'm reading "C.C. Pyle's Amazing Foot Race." It's great fun! It is the true story of the 1927 transcontinental race across America. (Sorry I snagged it first, Thatch. You can have it when I'm done.) These guys ran 30 - 70 miles a day for months, some of them in street shoes or workboots!