Found this on a
BassChat thread 8 years ago:
If it's branded G&L "Tribute" then it's an early example, and quite rare. If it's branded G&L "Premium" then it's a later example, and not so rare.
Quality-wise, the early MIJ Tribute line had a few teething troubles, but was soon outputting instruments of typically high Japanese craftsmanship.
After G&L moved production of its diffusion line to South Korea the original contract allowed G&L Japan to continue making G&L branded product, and that's when the "Premium" name came into existence. Those instruments offered more options that the MIK Tribute line, including, as mentioned above, more exotic finishes, as well as optional neck profiles, much like G&L USA.
The quality is bullet-proof, and, in my opinion, MIJ Premium instruments had better build/finish quality than the comparable BBE era G&L USA instruments.
Without knowing what you've been offered it's problematic to advise on trade value, but, when the MIJ Premium line appeared an L2000 MIJ had a sticker price around 80-85% that of an MIA example, when an MIK example was around 40-45% of an MIA example.