I've got quite a few old Beta format tapes (remember the format that competed with VHS and lost?). I thought about buying a player on ebay, but you never know what you are getting there. Do any of you know any reputable dealers that may have a refurbished unit for sale, or have any other suggestions on how to go about this.

Check local flea markets. I dont know if its the area I live in but I see Beta machines for sale at them all the time mostly for around $5-$10. You could also have a look here. http://www.betainfoguide.com/