I picked this up in September 2008 and it has a market value of about $11.00. Not a great amp, but not terrible either. I think these were part of a package along with an electic/acoustic guitar offered on HSN as well as some other outlets. It actually performed pretty well with a couple of the electric guitars I have. I couldn't find much information on them in my searches. If you know something about Estaban Amplifiers, let me know.