Available online from national Drug Chains/Pharmacies. My doctor gave me the coupon but it's accessible online. Used mine today at CVS for 10mL vial. Cost $41.97. Do NOT submit or put this through your insurance company. Purchase as a cash (or CC) sale. Here's the link:
Testosterone Cypionate Prices, Coupons and Information - GoodRx
By the way, you can print out multiple copies but make sure you hit the link each time so you're sure to get a different coupon number each time.