All you can do is write off sellers whose grading is a disappointment and buy more from those whose grading was fair or better. I have had experiences both ways, although as you might expect, many more of the former. It is possible for a seller to "visually grade" a record as "vg+" or even "near mint" based solely on appearance - only to find that it was a bad pressing or is worn out and unlistenable. It doesn't necessarily mean the seller was dishonest or the like, but it does mean you don't want to buy from them again. IMHO.
Grading Used Lps: What to look for?
Hey folks...my used options in my area include stores that use a fair,good, and fine grading system for Lps...however... since grading is highly subjective...there seems to be grave inconsistencies...I often find LPs with minor hair-line scratches cleaner sounding than mint Lps with some surface particles(even after cleaning)...any suggestions? For high demand used artists...stones,floyd,etc...the grading system is pretty forgiving and the price not surprisingly inflated...sometimes you really dont know how an Lp will sound still you bring it home...is this just par for the course for going used? ALso have Santana Abraxas which is warped and nicked...but is quiet as a church mouse...