Call out some differences and let's kick around where the values should fall, I am game.
I have some things that are ~$1-2 difference and I won't note them unless you want me to, at least not for now.
You have Paul Maul at $50, yet I have it at $40. And, Mutt's and Lavirus are $25 for you and $30 for me. Lastly, Bandache is $100 for you and $80 for me.
Also, for the first series, I put ludlows at higher value. Your's says 10-12 times, I put 14x for black ludlows and 18x for red ludlows. I had the same number for tans.
My second series was basically the same as your's, except I put black and red ludlows at 12x and 16x respectively. (Regarding white back value).
For many series, you note certain short prints have higher value. One of these examples being Gatoraid, and basically the titles that show up on the sheet one time less than the rest. I didn't change the value for those cards sans first series.
Your Spic and Span was five dollars above mine, not too much of a difference however.
Bum and Choke were $100 for you and $75 for me.
Grime heavy was $100 for you and $80 for me.
In 15th Series, you only noted Bloodweiser as a high demand card for $15. Mine was $12, plus Famous Mobsters and Gums.
16ths were very different. Your commons were $30, mine are $60. I may drop it to $50, not sure though. I'm never entirely sure how to designate that series because it seems somewhat volatile on eBay at least. And, the three double prints are $9 for me. Scoot and Real Garbage are $6 for you, and Jungle is $4. Your Scoot w/out copy is $125 while mine is $120.
I don't see 13th whites or 14th trifolds on your site, so I can't compare those. Although, the trifolds likely wouldn't be significantly different.
Ultimately, I believe it comes down to an ever-changing market and grading. I doubt either of us are supremely wrong in any account.