I'm actually really impressed with your mindset inasmuch as your posts elsewhere today in the Suggestions subforum, but clans purchasing buffs just seems like an absolutely terrible idea, I think.
On first blush, seems like it could be manageable and harmless enough... sure. But with "real clans" it would just be a punishing mechanic for any less-established clan. And most clans? I mean... using a clan-wide buff for some clan of low-level trash bots that decide to become "dumpers" at the end of month is actually just potentially huge and effectively a buff that was good for the whole month's worth of energy there.
Mildly interesting to see some clan like Rapture or Strung Out or Apex or whatever getting sold after dying... just so someone else can abuse the clan's TPs or whatever...
But, absolutely don't like this. I get it though. Feels interesting and such. Heck, even an argument that the game IS simply acquiring resources and we should embrace that fact. But... very firm "no" from me.