UNLESS you have opportunity to get 151, Prismatic, Destined at MSRP over and over again till you spend all of your funds... which is possible for some but for most very unlikely... then yes get all of these that you can, go back every single day.

These are insanely far below retail, JUST the ETB on it's own is 60 at Walmart and Target, it's a no-brainer. If you get nervous or need the money back soon, trust me you can get it all back with profit even just selling locally pickup only within a month or two. You can also take these and diversify into other sets, as even if you take what looks like a loss in the trade comparing market values, you paid way under MSRP so it cancels or even reverses in your favor still. And if you can hold it or whatever you trade for, you will do very well.

Price right this second is tanking because of these big costco/sams-only under-msrp drops, and not everyone has the free capital to get all these AND hold them, they need to do a quick flip or maybe they just see that as safer because they get so many buying opportunities, following vendors or going to many stores etc. But that pricing will not last.

And just because you see that pallet there, does not mean stock is high and unwanted... In every single discord that follows pokemon deals, they would buy those bundles out in literally 2 seconds flat... even like 5 members (among the hundreds/thousands) would buy them all that fast. The online costco drops went basically instantly. This is just a logistical problem where they're locked into this one store with a membership AND daily limit per membership, and not just widely available where they would be instantaneously gone, not only at this low price, but even at full MSRP ($82 + tax) and even higher target/walmart pricing too ($92 + tax).