I have a one of a kind Andy Warhol 4 Marilyns.All 4 6x6",golden,orange,pink,peach.… is it worth in USD?

It's printed by TeNeues Publishing(portfolio of six) and I never seen a copy anywhere. I've searched high and low. It's extremely rare and when I call galleries that deal in his art they all get very excited at first and then try to tell me it's only worth one to five grand and that they would like to buy it from me. Yet the only Warhol's they sell are wirth 250k, so something smells kind of fishy. No where else have I seen this version of four marilyns and it has all four of the most famous 6x6" prints that go on ebay for $65,000. If someone can tell me it's true value in USD then I'll even through some profit their way after selling it. One gallery out of California still emails me three times a week inquiring about the piece. I can send a pic to you if you'd like to see the print. What am I sittin' on?