Price check on some G1 comic duplicates

[Deep Purple Crystal]

I have recently received some more G1 comics, along with three duplicates, and would like to know what these duplicates are worth:
MLP comic no. 154 (1991): Fair condition, some markings.
MLP comic no. 175 (1992): Battered condition, markings, bent pages.
MLP and Friends no. 43 (1994): Good condition, no missing pages.
Could someone tell me what prices one might get for these issues?