How much is an injection fairy lily Yu-Gi-Oh card worth?

The old unplayable ones can be worth anything from £20($40) to £40($80), depending on condition and exact edition, some collectors will want them. The playable Obelisk is not worth that much, as it...

You would have to search long and hard to find someone who would pay even a few pennies for a card like Soitsu.

Check eBay, but only the completed listings, not Buy it Nows. This means you will be seeing the prices that people are actually paying for those cards, and not the prices that sellers want people to...

Depends which one it is. Starter deck cover cards and V-Jump promos will be worth less than certain special promotional cards.

Depends what card it is and how much the person wants it.