Cost of pokemon in the game corner by novaflare
Pokemon LeafGreen on SuperCheats.com
(Celedon City Game Corner)

Firstly you must go to the house house directly below the Game Corner.
Talk to the guy in the back in the back of the house.
and he will give you a coin case which u can use to store your coins in 

Cost of Coins

50 coins = 1,000 poke money
500 coins = 10,000 poke money

when you go next door to the game corner go in and there will be three people 

1st pearson says which prize would you like

SMOKE BALL       800 COINS
MIRACLE SEED   1,000 COINS
cHARCOAL       1,000 COINS
MYSTIC WATER   1,000 COINS
YELLOW FLUT    1,600 COINS

2nd pearson says which prize would you like

ABRA           120 COINS
CLEFAIRY       750 COINS
PINSIR       2,500 COINS
DRATINI      4,600 COINS
PORYGON      6,500 COINS

3rd pearson says  which prize would you like

COSTS 4,000 COINS
Tm 13 - Ice Beam
Type - Ice
Power - 95
Accuracy - 100%
PP - 10
Location - Celadon Game Corner
Descripion - 10% chance of freezing the opponent.

COSTS 3,000 COINS
Tm 23 - Iron Tail
Type - Steel
Power - 100
Accuracy - 75%
PP - 15
Location - Celadon Game Corner
Description - Chance of lowering the opponent's Defense.

COSTS 4,000
Tm 24 -  Thunderbolt
Type - Electric
Power - 95
Accuracy - 100%
PP - 15
Location - Celadon Game Corner
Description - An accurate Electric attack. Chance of paralyzing the opponent

COSTS 4,500 COINS
Tm 30 - Shadow Ball
Type - Ghost
Power - 80
Accuracy - 100%
PP - 15
Location - Celadon Game Corner
Description - Chance of lowering an opponent's Special Defense.

COST 4,000 COINS
Tm 35 - Flamethrower
Type - Fire
Power - 95
Accuracy - 100%
PP - 15
Location - Celadon Game Corner
Description - An accurate attack with a chance of burning the opponent.