Hi Susan.
The nature of the cost field has been changed a little and it’s not really expected to contain ‘plain text’ at this point. However, it’s certainly possible to add a small customization to restore the behaviour you are looking for:
function cost_as_plain_text( $cost, $post_id ) {
return esc_html( get_post_meta( $post_id, '_EventCost', true ) );
}
add_filter( 'tribe_get_cost', 'cost_as_plain_text', 100, 2 );
If you add the above code to a custom plugin or to your theme’s functions.php file you should be able to restore the display of text such as “$15.00 per month”.
Does that help?