https://www.amazon.com/28659-2-Lowering-Springs-2018-FA40-RA35mm/dp/B0828DDJGT
just got mine on amazon. shipped from RacinG in vegas. but some reason its more expensive today, maybe because they only have 2 left in stock?
paid $322 with $30 shipping.
if your ebay link is legit its a great deal