Cloud:
If you don't mind paying the very expensive aftermarket for the Gametoys version, is I believe on eBay and AliExpress. There is that Super Duck one that I've seen on AliExpress and eBay, it actually looks better in hand than the promo pics from what I've seen, and then there's the VTS Toys one, not a fan of that one personally. Toys Era may make it though, not sure about Gametoys doing a re-issue, have to see.
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Tifa:
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I'd recommend this, It's called "1/6 Longshan LS2023-TF Fantasy Goddess Action Figure", pretty cheap, it's available for pre-order on Giantoy, Gametoys one was on there but they're all sold out, you could wait for people to cancel their orders and take them instead on OneSixthKit or even put yourself on a waitlist on Giantoy or even try to find them on other retailers websites but I'd be impressed if you could. But if you want Tifa for a pretty low decent price, go for this, there is the ACG one but no one knows when that'll be out and also I believe that is only coming with the purple dress unless they make another with the default outfit, have to see. Also forgot to mention that Cloud super duck set is fairly cheap too on AliExpress.