Do I find out the hard way after I make my purchase with the educated guess that Bitcoin pricing is stable long enough that from my understanding the more popular Bitcoin is worth and the more money each Bitcoin is worth among other factors is what influences the Bitcoin Fee is there an app of some sort I can use on my Cell Phone to let me know the current Blockchain Wallet Sending Fees will be as that is the Wallet I am using for simply Sending Bitcoin into and Sending out of.
Any help explaining how this works would be greatly appreciated as it is frustrating not knowing what my Bitcoin Fee is going to be hence I don't know how much money in Bitcoin more than what I am spending on my purchase that I need to acquire?
I don't really understand what you are trying to get across here, are you asking about transaction fees and how they are calculated, or are you confused about your wallet sending fees from blockchain.com?
Most wallets don't have any sending fees, the extra dollar or 2 that is taken away from your wallet is for mining fees, which is used in order for your transaction to confirm. If you are unhappy with the fees you are forced to pay via your wallet service, you can easily swap over to electrum, or other similar wallets where you have full reign over how much you are paying for your fees.