Just a reminder, the reason I sent you those was because of this thread Is flipping ungraded cards by grading them still good? - #41 by pfm where people were encouraging you to grade and flip cards for profit, and I said not to because you didn’t have the experience or capital at the time to make it work, especially in this competitive market. So I sent you the gift of experience.
For 20 CGC cards, the grading fees would have come out to $240 today plus s&h. Most of cards I sent were decent cards in mint condition, but they were generally were not going to sell quickly. The lesson being that it’s really hard to turn a profit with grading without having a strategy and are selective about what you send in.
Remember, if you graded those 20+ cards yourself then every card you make less than $12 profit on is a card where you would have more money today if you didn’t submit it. At least in this case, the cards were free so every dollar of profit is free money to you.
If you want to just liquidate them, an auction would be good because it gives you more ebay feedback and experience shipping packages, rather than just bulk selling to a store. You can also combine cards into one listing before auctioning like Riolu/Lucario or Machamp/Clefairy. That way you save on shipping and people are more enticed to bid.
On a side note, your card images have significantly improved, but still has more room for improvement.