yes like any hobby the sky is the limit,old bottles are a good investment,they never really go down in price,if anything they go up 5 percent a year.its the third biggest hobby in the world behind stamps and coins
it started with my dad buying some bottles about 25 years ago and i also got the bug to collect them,he went to gemstone exhibition and a guy was selling them. i have over 5000 bottles in my collection cheers