[tanewishly]

Bob Ross was known in my country (in Europe) due to his show at the time. Not quite universally, but probably closer to a household name than any other living painter was at the time. Dunno how it was in other countries in Europe, but still. The man was relatively well known for paintings, paintings that were regarded well by the general audience (experts: dunno).

So while maybe he couldn't be selling his paintings for 1000s to the decently-off, there clearly was ample demand. If he truly wanted to make a boatload, he easily could have.

Related: the treasure trove could easily be sold 1 painting at a time. Just don't make it regular - not once a year, but sometimes 2 in 2 months, and then 5 years nothing. That really wouldn't spurs the value that much, if at all.