This is obviously speculation but I really think once the vinyl bubble bursts (and it will) the price of a lot of records released from around 2005 to today will come down, including the Maiden picture discs. Further, I think picture discs and record store day exclusives (e.g. Empire of the Clouds) will be the first things to drop in price. A lot of what is happening now in vinyl reminds me of the comic book industry in the late 80s and early 90s. That’s all to say that if you want the picture discs, you might be able to get them for decent prices eventually. I was actually already able to get En Vivo a couple years ago for way less than what people are trying to sell it for on eBay. Just takes patience and good searching.
But I don’t think they’ll be reissuing any of those post 80s albums on picture disc, save for maybe some one offs. I think we will see some more Maiden vinyl in the future, but probably black.