I think it depends on the situation

1. If you are a classic pin person who has no issues repairing / restoring, it's a non issue. Value is based on condition regardless of whether it's a re-import or not

2. If you aren't into repairing pins and are purchasing from a reputatible seller who has repaired / restored the pin, it's a non issue. Again, value is based on the condition regardless of whether it's a re-import or not

3. If you aren't into repairing pins and don't have experience evaluating the condition of a pin, everything being equal, re-imports are probably a bit more risky (but any game can be hacked and/or in crap condition)