Amazon has the Mabosstiff ex Showcase Collection discounted to $10.99 + 30% off coupon, brining this down to approx. $7.69 + tax.
Packs appear to be 2 x SV:Base Set and 1 x Silver Tempest.
This makes the packs around $2.56 + tax.
https://www.amazon.com/dp/B0CW6P3PWX
QA note: Coupon is YMMV
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