""On what planet? They wouldn't have even cost that much when new.""
Hmmm...well considering that most interesting vintage bikes are worth substantially more now than the original cost, I won't qualify that. My LBS in San Francisco would sell that Huffy for $200...and he would get it. There is a market for ultra-funky vintage bikes like that in the city...even low-end ones. The Columbia maybe a bit less...but still would find a home quickly.