2 characters:

A+
A1

3 Characters:

A++
AA+
Fab
Rad

4 Characters:

100%
A+++
AAA+
A-OK
Best
Cool
Deal
Fast
Fine
Item
Nice
Safe
Thx!
Tops
Very
WOW!

5 Characters:

Clean
Grand
Great
Happy
Prime
Quick
Price
Rapid
Solid
Super
Sweet
Swift
Thanx
Value
Whoa!

6 Characters:

Choice
Dealer
Groovy
Honest
Polite
Secure
Seller
Snappy
Speedy
Superb
Sweeet
Thanks
Timely
Vendor
Zowie!

7 Characters:

Amazing
Auction
Awesome
Bargain
Classic
Elegant
Genuine
Helpful
Perfect
Pleased
Quality
Service
Sweeeet

8 Characters:

A Steal!
Accurate
Ecstatic
Fabulous
Flawless
Friendly
Glorious
Good Buy
Gorgeous
Merchant
Pleasant
Peerless
Standout
Stunning
Superior
The Best
The Bomb
Thrilled
Up Front
Way Cool

9 Characters:

All Right
As Listed
Authentic
Brilliant
Competent
Delighted
Excellent
Exquisite
Good Deal
Great Buy
Love This
Low Price
Marvelous
Overjoyed
Satisfied
Thank You
Top Notch
Unrivaled
Very Best
Wonderful

10 Characters:

A Home Run
A Pleasure
Astounding
Delightful
Dependable
First Rate
Good Value
Great Deal
Great Item
I'm Elated
Impressive
Incredible
Super Cool
Super Fast
Supersonic

11 Characters:

Astonishing
Considerate
Cooperative
Fascinating
Great Value
Interesting
Magnificent
No Problems
Outstanding
Splendorous
Trustworthy
Unsurpassed
Well Packed
Wicked Cool

12 Characters:

As Described
Breathtaking
Just Perfect
Looking Good
Overwhelming
Perfect Deal
Problem Free
Professional
Tickled Pink
Unbelievable

13 Characters:

As Advertised
Awe Inspiring
Classy Seller
Communication
International
Lickety Split
No Complaints
Splendiferous
Superb Seller
Thanks A Ton!

14 Characters:

Awesome Seller
Clear Pictures
Extremely Cool
High Recommend
Lightning Fast
Mint Condition
Perfect Seller
Satisfied 100%
Superb Service
Well Protected

15 Characters:

Breakneck Speed
Expertly Graded
Extremely Happy
Great Condition

16 Characters:

Above And Beyond
Arrived Promptly
Easy Transaction
Highly Recommend
Received Quickly
Secure Packaging
State Of The Art

17 Characters:

Excellent Service
Great Transaction
Just As Described
Low Shipping Cost
Stunning Purchase
Super Smooth Deal
Thanks A Million!
Unbelievably Cool

18 Characters:

Expertly Described
Smooth Transaction
Very Fast Shipping

19 Characters:

Beautiful Condition
Bid With Confidence
Excellent Condition
Extremely Satisfied
Great Communication
Greatly Appreciated
High Recommendation
Near Mint Condition
Perfectly Described
Very Good Condition

20 Characters:

Accurate Description
Exactly As Described
Expeditious Shipping
I'm Loving This Deal
Would Buy From Again

21 Characters:

Better Than Described
Wonderful Acquisition

22 Characters:

Couldn't Be Any Better
Highest Recommendation
Would Highly Recommend

23 Charactres:

A Pleasure To Deal With
Excellent Communication
One Of eBay's Very Best
Would Do Business Again

24 Characters:

Beyond My Wildest Dreams
Well Protected Packaging

25 Characters:

Would Buy Again And Again

26 Characters:

Even Better Than Described
Item Arrived Lickety Split
Would Definitely Recommend

29 Characters:

I'm Very Happy With This Item
One Hundred Percent Satisfied
Seller Is Extremely Competent

30 Characters:

A Pleasure To Do Business With
Absolutely Positively The Best

33 Characters:

Item Arrived With Breakneck Speed
Surpasses My Deepest Expectations

34 Characters:

Supercalifragilisticexpialidocious
Thank You!  Thank You!  Thank You!