i dont understand you ...
honestly .. coins have 8 or 10 and up to 13 decimals ..
a coin can cost 1 BTC each and you receive just 1 Coin in return ..
or it cost 1000BTC each and you just receive 0.0001 Coins if you wanna spend 1 BTC on it ...
thats nonsense what you typ with your between 100k and 500k ..
or you talk about 500k different coins
or you talk about 500k Dollar in coins ..
oO
i dont understand it
i think what he talking is just 500k for different coins that you want to sell and it will be good if the OP is just stated how many Bitcoin worth of cryptocurrency that he wants to buy