6″ Pop-up 8′ – 15′ Spray Distance Rain Bird Professional Pop-Up Sprinkler (1806AP) $3.25 + Free Shipping w/ Prime or on $35+

Amazon has 6" Pop-up 8′ – 15′ Spray Distance Rain Bird Professional Pop-Up Sprinkler (1806AP) for $3.27. Shipping is free w/ Prime or on $25+ or $35+ orders (minimum requirement varies by location).
Note: state legislation prohibits sale into CA, CO, HI, VT, MA, ME, NY, OR, RI, WA, and Washington DC; complying Rain Bird model = 1806APPRS