The one thing he left for others carrying the same concern.
"If cost isn't a burden for you, I absolutely recommend it."
Cost is certainly a variable. That said, gynecomastia of Simon grade IIa or higher with glandular tissue confirmed on ultrasound is eligible for national health insurance coverage, and depending on your policy terms, private health insurance often applies as well.
Get the exact numbers in hand first, and then decide once more at your own pace.