Hi.  I am new to using Bitcoin.  My first transaction may be my last as it seems to me Bitcoin is a huge rip-off.  I made an error trying to pay for an item via my Bitcoin wallet on Electrum.  I have $150 USD in my balance.  I was trying to make a purchase for $60 USD using my Bitcoin wallet.  What I didn't know, and later figured out, is that my wallet was on a default unit of mBTC.  The payment was to be made in BTC.  So, they say, I only sent $.05 to the site I was trying to purchase from.  At that point, I had not figured out the unit thing or how to change it in my wallet so I cancelled the transaction.  The site that claims only $.05 was sent was happy to refund it but $8.42 USD + a $.10 USD fee was charged to my account.  I asked them about this and they said is was probably a miners fee.  Electrum claims that they charge fees relative to the amount charged and from what I found on Google, miners fees shouldn't be that high.  Can anyone tell me why I was charged $8.42 for a $.05 transaction?  Here are the details of the transaction page...

Date: 2020-01-22
Status:  199 confirmations
Amount sent:  .00100771 BTC
Fee:  00001206 BTC (3. sat/byte)
RBF:  True
LockTime:  614013
Included in block:  (address)
At block height:  614015

Inputs:
(Addressess)

Outputs:
(address):  0.00000771
(address):  0.001
(address):  0.01631023

Thank you in advance for you help!!