If ever you will get a hardware wallet here's a list[1] of vector attacks you may know to prevent and protect your future hardware wallet and funds there. Good luck.
[1] Attack vectors for Hardware Wallets
Topic: Bitcoin transfer value (Read 170 times)
Thanks so much for your replies everyone. Very helpful 
I transferred via Blockchain where the fee was automatically calculated at checkout. I didn't see an option to enter a fee myself. Is this an account specific feature?
OmegaStarScream already answered your question so just as a heads up: if you're handling huge amounts of money, grab a Ledger[1] or Trezor[2] hardware wallet so you have the best security of your funds. Using wallets such as Blockchain.com is life if you're only holding an amount that's not life-changing when stolen.
[1] https://ledger.com/
[2] https://trezor.io/
When the transfer of bitcoin occured with a particular time period. For instant, the transaction of bitcoin needed 30 minutes of time.Then the value which you had received, it will differ by two concern.One by the fees of the bitcoin and the change in the value.The value of bitcoin with respect to dollars is changed.But the value of bitcoin is same.So wait till the price equal to dollars.Then you can exchange to more dollars.
Your "forex" account will be credited based on the current value of bitcoin when it reaches your account and has the required number of confirmation. If the value of btc was $100 when you sent and it went up to $102 by the time it reaches the required network confirmation, your account will be credited with $102.
I transferred via Blockchain where the fee was automatically calculated at checkout. I didn't see an option to enter a fee myself. Is this an account specific feature?
Not account specific. You can set your fee manually. Refer to the picture omegastar quoted and click on "Customize fee" to set your own fee. Blockchain.info wallet shows fee based on sat/byte. Use priority if you want to include your transaction within next block. Or you can set more than recommended priority fee manually to guarantee your transaction to be included within the next block. But make sure you don't overpay in fees. Overpaying changes nothing. Google current bitcoin fee sat/b and you might get some good recommendation on fee. 
Bitcoin can change its value in dollars until your transaction is confirmed. This is especially common when you set a low fee when sending bitcoin. This is sometimes the case when you are paying for something that is valued in dollars. But if you send coins to your friend or relative, then 1 BTC always equals 1 BTC.
I transferred via Blockchain where the fee was automatically calculated at checkout. I didn't see an option to enter a fee myself. Is this an account specific feature?
You're referring to Blockchain.com wallet? If so, although It's been a long time since I last used that wallet, I believe it's still possible to customize the fees. Either manually or by selecting (Slow, regular, fast) as shown here:
I transferred via Blockchain where the fee was automatically calculated at checkout. I didn't see an option to enter a fee myself. Is this an account specific feature?
Thanks for your reply. I am sending Bitcoin to a GBP forex trading account, so I presume it may be higher or lower when automatically converted on their end if the GBP value changes?
Yes, but it won't change that much. Bitcoin's price is not that volatile. Just make sure to pay enough fees so your transaction gets confirmed and credited to your account more quickly.
This will probably sound like a silly question, but I am really not clued up on crypto at all. Say, for example, I send Bitcoin to a friends wallet and it takes a long time to arrive. Will the amount be affected by price fluctuations in transit or is it set in stone? Hope this make sense!
You're not sending him USD, you're sending him BTC. So If you send him 1 BTC, he will receive that full amount. What could change is the USD value.
I can send you 1 BTC (39,000$) and by tomorrow, the price can go up to 40K but you will still have that 1 BTC regardless of whether the price goes up or down.
Thanks for your reply. I am sending Bitcoin to a GBP forex trading account, so I presume it may be higher or lower when automatically converted on their end if the GBP value changes?
This will probably sound like a silly question, but I am really not clued up on crypto at all. Say, for example, I send Bitcoin to a friends wallet and it takes a long time to arrive. Will the amount be affected by price fluctuations in transit or is it set in stone? Hope this make sense!
You're not sending him USD, you're sending him BTC. So If you send him 1 BTC, he will receive that full amount. What could change is the USD value.
I can send you 1 BTC (39,000$) and by tomorrow, the price can go up to 40K but you will still have that 1 BTC regardless of whether the price goes up or down.
This will probably sound like a silly question, but I am really not clued up on crypto at all. Say, for example, I send Bitcoin to a friends wallet and it takes a long time to arrive. Will the amount be affected by price fluctuations in transit or is it set in stone? Hope this make sense!
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