It depends if you have double series like 8866.com or 2244.com However , a NNNN.com I would appraise it at $200-$450 but of course it depends on the numbers also
I think you are pretty close 0lgi. I sould say the same. And some could obviously get alot higher in value. It all depends on the numbers. IMO, 0078 is worth less than 7800 and even more valuble 7887 is worth less than 8008 and I'd say 1980 is worth quite a bit!. LOL It depends on significance, appeal, importance, personal needs, look, and saturation.
Yes, I would think there might be a huge variation...sort of what GreenGambler said. Based on significance, world events (1945 .com is probably high value) etc. On the other hand something like 0093 .com <<<--- probably in a whole different range.