Use promo code 15W4PACK to take $11.20 off $55.99 bringing the total to $44.79, ships free with Prime. I am even seeing free 1 day delivery in my area.
Not quite as cheap as a prior deal to get 1 for $9.99 but pretty close if anyone missed out.
I have two of these bulbs from the prior deal, they work great very bright and dim well. Using in two rooms which have a single recessed light fixture with a single bulb socket where a single 60w equivalent LED was just not cutting it - these brighten the whole room. Seems quality so long as they last, they do come with a 5yr warranty.