Hi everyone !
I'd like to buy a 19 year-old Yamaha TRS PRO.
I would like to keep it for a few years at least.. So, I wonder if it is worth it. What is the lifespan of such a guitar?
what about the fret?? or I don't know what else.
I have found nothing about this guitar on the Internet...
Let's assume that the guitar was well maintained by the owner.
By looking around you can get an idea of what the "resale value" is for that guitar... it's what you see it listed for most often (and especially what people actually purchase it for most often).
If it's a well-made guitar it should be good for quite a while if it's maintained well and taken care of... I still have a Yamaha SC400 that I bought as a kid in 1982, and it's perfect other than some damage my acidic sweat did to the bridge in the first couple of years I played it.
My personal thing is "don't buy a guitar unless you'd potentially keep it forever," but then I've never sold a guitar I've bought (and they're stacking up around me).
frets can be replaced when worn down, if the guitar is worth more that the cost of having the frets replaced, and to address some other problems that come with normal wear from playing frets can be dressed and filed by repairmen. Another concern (and you sound like you're asking for things you should be concerned about) is whether the neck has warped, if the action (string height and how hard it is to press down on the strings) and intonation (whether the guitar is tempered correctly and in-tune with itself along the length of the neck) are good or able to be adjusted and corrected.
Those concerns are why it is usually advisable to either have an experienced player check out an instrument for you before you buy it, or to buy a new guitar from a reputable dealer with a solid return and warranty policy.
hope that helps.