The Pride Rainbow Batman Funko Pop was vaulted in this past month and could be set to rise in price in the near future. Pride month is in June and should increase demand for these Pops. With only 11 sellers on Amazon and under 100 in stock between them, a slight spike in demand could cause the supply to dry up quickly.
The sell-through rate on Ebay is not great at the moment, but after we see demand pick up next month and Amazon begin to sell out, buyers will likely start to turn to Ebay to purchase these. At this point we should start to see Ebay prices begin to rise.
Of course, this is speculation and not investment advise. Let me know if you agree or disagree in the comments below and feel free to mention any Pops you think are set to pop in price as well!