From my experience growing lemons, they don’t come much better than the Meyer. I grow a few acres of commercial Eureka type lemon and have a few Meyer’s in our family orchard. Hands down the Meyer is tops and most requested by family and friends.
Mine are a semi-dwarf Meyer, in the ground and are super productive. So much so, I have to pinch many juvenile fruit to keep branches from breaking because of weight. This also helps remaining fruit ripen to full potential! I believe they are “Improved” or virus free Meyer.
IMHO… you will not regret parting with the $50, when enjoying your first crop.