Comedy DVD I am hearing nightmares of Medicare Supplemental premium costs going around $800.3. If the answer tom 3 is yes

Here are my questions.2. Broker quoted $142 for Medicare Supp Plan F premium,
Comedy DVD, and broker is aware of all of the above (I told broker wrong age of 71) Should we be concerned with premium spikes higher than 142 because of his condition? I am hearing nightmares of Medicare Supplemental premium costs going around $800.3. If the answer tom 3 is yes,
Millenium Seasons 1-3 DVD Box set, how can we avoid these high premiums? Shop Around?4.