Thanks to @Lewk on Discord , starting here.

(Commentary included as they help one get a sense of or feel of typical plarium packs / progressions.)

"... and of course, I went to buy the 1/6 VIP one and the bank BROKE as usual."

- so have an eye ... you can only buy so many offers before game bugs prevent more purchases.

"I bought the 1/6 twice and it progressed to 2/6"

- i.e. Sometimes buy 1/x of a stack doesn't then present you with the next pack in the stack.

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"As far as I could get.   Buy too many offers and Plarium stops more purchases"

"I will resume when Plarium is nice enough to take more of my money"

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"Please keep hands and feet inside the ride at all times.  I'm starting up the bank offer purchases in series again where I left off yesterday"

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"And I'm going to stop right there again.   Plarium has a hard time figuring out what items are worth a 250% increase in price.    Some keys and some errands, not so much.  Especially when a previous offer had the same items, not so much gold for only 19.99"