I have in my inventory:

1 Level 22
1 Level 23
1 Level 25
1 Level 26
1 Level 31
3 Level 35
1 Level 37
1 Level 38
1 Level 39
1 Level 41
1 Level 43
1 Level 44
1 Level 50

Just for fun, that's a total of 531,976 experience.

The levels 20-30 usually go for about 5000 gold, 31-40 10K gold, and above about 15K to 25K gold. So you can get a major discount or sell them on the broker and make a profit.

I'd like to sell all of them at once.

Starting Date and Time: When Posted
Ending Date and Time: Thursday at 1:00 pm
Starting Price: 25K
Buy-it-Now Price: 100K
Minimum Bid Increase: 1000 gold

100k ;)

Thanks a million Maimah