So lets say I put in $100 dollars. I buy while its at a low of $10,400. The price goes up to $10,400 and I sell. Whata my profit?
IMHO
depending on the exchange and tax fee, you will probably be at a loss, you will need it to go to 10,400.00000000000000000000000001 to be in profit anyways
your profit = 0 atm
but you do profit have 100$ as BTC rather than 100$

how is 10,400 the low and 10,400 the high? LMFAO

, thanks for the chuckle I needed that OP.
now how to calculate profit
ending investment (when you sell let us say) = 101
minus initial investment (when you buy let us say) = 100$
minus tax/transfer fees (let us say 0 for this example)
= profit
101 - 100 - 0 = 1
