Besides carousell, where can I sell my transformers without feeling like being low balled or rip off?

[nez]

Besides carousell, where can I sell my transformers without feeling like being low balled or rip off?
My listed price pricing I put lower or at least close to other existing listing (I use that as a reference), so I feel that selling at carousell is not being valued at.

Disclaimer: Not for every buyer I have meet, most were polite and reasonable but lately I feel something not right.

 

[nez]

And the thing is it is not mine and I am helping to sell them. So I feel terrible to get such offers and to actually did sell a few at such low offer just makes me feel I did a disservice to the owner.