Cheapest priced copy (Marvel Super Heroes): $0.35 at Card Kingdom, near mint, their price list as of .
Super Strength 
Enchantment — Aura · Common · Marvel Super Heroes · #189
Enchant creature
Enchanted creature gets +4/+4 and has trample and ward {1}. (Whenever enchanted creature becomes the target of a spell or ability an opponent controls, counter it unless that player pays {1}.)
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1 printing · $0.35 to $0.49 at Card Kingdom
| Set | Number | Rarity | Card Kingdom | Foil |
|---|---|---|---|---|
| Marvel Super Heroes | 189 | Common | $0.35 | $0.49 |