If there is only one mismatch, it might be a simple oversight, but if several overlap, you should think carefully
In response Mothra, one of humanity's greatest protectors, did battle with Battra and bested it, eventually sealing it away deep beneath the North Sea
It seems that bundle prices for sets that were released just a couple of years prior tend to appreciate fairly consistently, especially if you consider bundles from Standard-legal sets can often be found at a discount on TCGplayer Streets of New Capenna bundles can be had for as low as $25
Post some with me
If an exchange sounds like your idea of fun, we'd recommend doing so on a local level
For the most part, if investment is your primary goal, rare cards are the preferred target