Here is the Price Guide for the Base Set cards. I will Try have the prices for all the sets.

The first number is the low price and the second number is the high price.

Hey if you have any 1st editions that will bost ur price rang
1st edition holo:$10.00More
1st edition uncommon: $5.00 more
1st edition common: $ 1.00 or $2.00

1 Alakazam-Rare Holo $12.00 $20.00
2 Blastoise-Rare Holo $18.00 $28.00
3 Chansey-Rare Holo $12.00 $20.00
4 Charizard-Rare Holo $35.00 $50.00
5 Clefairy-Rare Holo $12.00 $20.00
6 Gyarados-Rare Holo $10.00 $18.00
7 Hitmonchan-Rare Holo $10.00 $18.00
8 Machamp-Rare Holo $10.00 $15.00
9 Magneton-Rare Holo $ 8.00 $15.00
10 Mewtwo-Rare Holo $12.00 $20.00
11 Nidoking-Rare Holo $10.00 $18.00
12 Ninetales-Rare Holo $10.00 $18.00
13 Poliwrath-Rare Holo $10.00 $18.00
14 Raichu-Rare Holo $12.00 $20.00
15 Venusaur-Rare Holo $12.00 $20.00
16 Zapdos-Rare Holo $12.00 $20.00
17 Beedrill-Rare $5.00 $7.00
18 Dragonair-Rare $5.00 $7.00
19 Dugtrio-Rare $5.00 $7.00
20 Electabuzz-Rare $5.00 $7.00
21 Electrode-Rare $5.00 $7.00
22 Pidgeotto-Rare $5.00 $7.00
23 Arcanine-Uncommon $1.00 $2.00
23 *Arcanine( w/ the other leg)-Uncommon $50.00 $100.00
24 Charmeleon-Uncommon $1.50 $3.00
25 Dewgong-Uncommon $1.00 $2.00
26 Dratini-Uncommon $1.00 $2.00
27 Farfetch'd-Uncommon $1.00 $2.00
28 Growlithe-Uncommon $1.00 $2.00
29 Haunter-Uncommon $1.00 $2.00
30 Ivysaur-Uncommon $1.00 $2.00
31 Jynx-Uncommon $1.00 $2.00
32 Kadabra-Uncommon $1.00 $2.00
33 Kakuna-Uncommon $1.00 $2.00
33 *Kakuna-(Length/Length Error) Uncommon $4.00 $7.00
34 Machoke-Uncommon $1.00 $2.00
35 Magikarp-Uncommon $1.00 $2.00
36 Magmar-Uncommon $1.00 $2.00
37 Nidorino-Uncommon $1.00 $2.00
38 Poliwhirl-Uncommon $1.00 $2.00
39 Porygon-Uncommon $1.00 $2.00
40 Raticate-Uncommon $1.00 $2.00
41 Seel-Uncommon $1.00 $2.00
42 Wartortle-Uncommon $1.00 $2.50
43 Abra-Common $0.25 $0.50
44 Bulbasaur-Common $0.25 $0.5
44 *Bulbasaur-(Length/Length Error) Common $4.00 $7.00
45 Caterpie-Common $0.25 $0.50
45 Caterpie-(HP 40 Error) Common $3.00 $5.00
46 Charmander-Common $0.35 $0.75
47 Diglett-Common $0.25 $0.50
48 Doduo-Common $0.25 $0.50
49 Drowzee-Common $0.25 $0.50
50 Gastly-Common $0.25 $0.50
51 Koffing-Common $0.25 $0.50
52 Machop-Common $0.25 $0.50
53 Magnemite-Common $0.25 $0.50
54 Metapod-Common $0.25 $0.50
54 *Metapod-(HP 70 Error) Common $3.00 $5.00
55 Nidoran-Common $0.25 $0.50
56 Onix-Common $0.25 $0.50
57 Pidgey-Common $0.25 $0.50
58 Pikachu-Common $0.25 $0.50
58 *Pikachu-(Red Cheeks Error) Common $10.00 $15.00
59 Poliwag-Common $0.25 $0.50
60 Ponyta-Common $0.25 $0.50
61 Rattata-Common $0.25 $0.50
62 Sandshrew-Common $0.25 $0.50
63 Squirtle-Common $0.50 $1.00
64 Starmie-Common $0.25 $0.50
65 Staryu-Common $0.25 $0.50
66 Tangela-Common $0.25 $0.50
67 Voltorb-Common $0.25 $0.50
67 *Voltorb-(Monster Ball Error) Common $3.00 $5.00
68 Vulpix-Common $0.25 $0.50
69 Weedle-Common $0.25 $0.50
70 Clefairy Doll-Rare $3.00 $5.00
71 Computer Search-Rare $3.00 $5.00
72 Devolution Spray-Rare $3.00 $5.00
73 Imposter Professor Oak-Rare $3.00 $5.00
74 Item Finder-Rare $3.00 $5.00
75 Lass-Rare $3.00 $5.00
76 Pokemon Breeder-Rare $3.00 $5.00
77 Pokemon Trader-Rare $3.00 $5.00
78 Scoop Up-Rare $3.00 $5.00
79 Super Energy Removal-Rare $3.00 $5.00
80 Defender-Uncommon $1.00 $2.00
81 Energy Retrieval-Uncommon $1.00 $2.00
82 Full Heal-Uncommon $1.00 $2.00
83 Maintenance-Uncommon $1.00 $2.00
84 Plus Power-Uncommon $1.00 $2.00
85 Pokemon Center-Uncommon $1.00 $2.00
86 Pokemon Flute-Uncommon $1.00 $2.00
87 Pokedex-Uncommon $1.00 $2.00
88 Professor Oak-Uncommon $1.50 $3.00
89 Revive-Uncommon $1.00 $2.00
90 Super Potion-Uncommon $1.00 $2.00
91 Bill-Common $0.50 $1.00
92 Energy Removal-Common $0.25 $0.50
93 Gust of Wind-Common $0.25 $0.50
94 Potion-Common $0.25 $0.50
95 Switch-Common $0.25 $0.50
96 Double Colorless Energy-Uncommon $1.00 $2.00
97 Fighting Energy-Common $0.10 $0.25
98 Fire Energy-Common $0.10 $0.25
99 Grass Energy-Common $0.10 $0.25
100 Electric Energy-Common $0.10 $0.25
101 Psychic Energy-Common $0.10 $0.25
102 Water Energy-Common $0.10 $0.25