Intermission: My Series 1-16 Unopened Pack Availability Guide

Disclaimer: these are just my personal impressions based on looking for packs for the last decade

VERY HARD TO FIND:

1st Series, 5th Series yellow (85-fold only), 11th Series green

FAIRLY HARD TO FIND:

2nd Series, 3rd Series red, 5th Series yellow (21-fold), 8th Series blue, 10th Series (21-fold only),

11th Series yellow, 16th Series

AVAILABLE BUT NOT COMMON:

3rd Series yellow, 4th Series, 5th Series blue, 9th Series (21-fold only), 13th Series

FAIRLY COMMON:

6th Series (except 21-fold no ad), 15th Series

VERY COMMON:

6th Series (21-fold no ad), all 7th Series, 8th Series orange, 9th series (85-fold), 10th Series (85-fold), 12th Series, 14th Series