Posted By:
Scott Gross1 -- Buy Alan's book
2 -- Do a search under boxing cards on ebay for either t218 (smaler card, name inside border), or t220 (bit larger, name at bottom outside border). Watch a few, you'll get a good idea of condition/value.
3 -- My two cents (having completed and sold both sets): p/f - <$5; g/vg - $5-20; ex - $20+; higher grade ones are less often seen, and prices get unique. You'll rarely see one go for over $50. T218 keys: Johnson (2 poses), Jeffries (2 poses), and Eyton (referee). No Jack or Jeff in t220, and no real keys, in my opinion.
Fun, attractive, and affordable sets to collect, that can be completely done via ebay.