I have no idea why Little Yellow Bird indicate these as being reduced from $20 because that is really misleading. This 7 pack is great but quite concerned by misleading pricing structure used by Little Yellow Bird that I will source my filters from elsewhere. Great filters that are easy and functional to use. Use of sale terminology and original pricing though is extremely misleading. If nothing else needs reviewed to realign with Lanaco…even when nose wires were for sale the pricing difference is well, extreme.