Hello there,

Thank you for reaching out to us.

Not sure if this is possible to achieve at this time. We will take a look and contact you as soon as we have more information. 

Hello again,

We have forwarded this to our developers and as soon as we get feedback from them we will contact you again on this ticket. 

Hello again,

We just got the feedback from our colleagues and they have told us that you can use "amelia_manipulate_email_data" filter.

We used it like this:

function example_callback( $data ) {
    $data['body'] = str_replace('AM:$', 'AM:', $data['body']);
    // Or in your case, since you use 
    // "Price Symbol Position: After" something like this:
    // $data['body'] = str_replace('$*CC', '*CC', $data['body']);
    return $data;
}
add_filter( 'amelia_manipulate_email_data', 'example_callback', 10, 3 );
You can add this script to wp-content/mu-plugins/functions.php or in the functions.php file of your child theme.

And here is the result:

Best regards. 

Hello again and thank you for the compliments we try to help as best as we can.

You can use dynamic placeholder:

amelia_dynamic_placeholder

like this:

function example_callback( $data ) {
    if ($data && isset($data['appointment_price'])) {
        return str_replace('$', '', $data['appointment_price']);
    }
    return '';
}
add_filter( 'amelia_dynamic_placeholder_unformatted_appointment_price', 'example_callback', 10, 1 );

You'll get this:

So you'll have %amelia_dynamic_placeholder_unformatted_appointment_price% (in this example) placeholder without currency symbol and you can use it in your QR string. 

Hello again,

We are delighted to hear that you managed to set this up to suit your needs and should you have any further inquiries, we kindly request that you open separate tickets for each question and we will gladly help you there.

We wish you all the best and hope you have a wonderful day ahead.