Barbie collectors can start counting the Benjamins, 'cause the movie's Oscar noms are about to blow up the Barbie resale market ... according to one toy expert.

We talked to "America's Toy Scout" Joel Magee -- a frequent "Pawn Stars" guest with more than 20 years experience in the collectibles world -- and he says he's expecting prices to just keep on climbing since the movie picked up 8 noms for this year's Academy Awards

JM says all the buzz around the movie and awards season is indoctrinating the young generation into collectible culture. So, whereas a few years ago the biggest buyer of Barbies might be your nostalgic Grandma Sue, it's now fashionable among the Gen Z crowd to buy Barbie.

And, Magee pulled out his magic 8 ball to make a prediction for us ... saying the mass producer of Barbie, Mattel, is really smart and loves its limited-edition drops -- so keep your eyes peeled for an Oscar-themed Barbie possibly hitting the market very soon.

Now, of course, Ryan Gosling was nominated for an Oscar while Margot Robbie missed out in the acting category, but Magee says the breadwinner has always been, and will remain, Barbie. Sorry, Ken.

Joel tells us collectors go out to buy different Barbies -- Astronaut Barbie, Doctor Barbie, Birthing Dog Barbie, etc. -- and they'll get the accompanying Ken to complete the set, but he's not the draw.

Translation: He's just Ken.

That said ... an Academy Award for Gosling will jack up those Ken prices -- Magee's talking doubling or tripling the value. And, if he's not Kenough for the voters, Joel still sees a 40 or 50% increase for the nomination alone. Cha-ching!!!

Magee's final piece of advice for collectors -- buy those limited-edition Barbies, like the Oscar Barbie he predicts could be coming down the pike.