price guide to these coins please!!!!?

hi there
can someone please give me a price guide to these following coins
1.Uncirculated 1908 $5.00 American Indian Head GOLD HALF Eagle Coin
2. 1969 (10 Coin Set ) Unopened/Sealed Envelope Mint Set
3. 1968 (10 Coin Sets, 20 Coins ) Unopened/Sealed Envelope Mint Sets
4. 1970 (10 Coin Set ) Unopened/Sealed Envelope [...]