With orders of $25 or more, Amazon offers Prime members the Campbell Hausfeld 17-Piece 1/4" Air Tool And Accessory Kit
, model no. MP2847, for $5.04
with free shipping
. (Non-members can spend $49 or more to qualify for free shipping.) That's the lowest total price we could find by $10. It includes a blow gun, coupler, four 1/4" male plugs, a safety nozzle, tapered inflator, two inflation needles, a dual foot chuck, 50-PSI gauge, female coupling, two 1/4" female plugs, and two male couplings.
Note that this item is part of Amazon's add-on program and can only be purchased with an order of $25 or more.