Slayer
Actually Cheap
"Actually Cheap" (実際安い) is a common Neo-Saitaman phrase for "Really Low Price".
NinjaBeauty Treatment
Bamboo Shoot
Possibly Azul's spoiler-ish joke.
"Luminous bamboo shoots" is an important McGuffin in one of Ninja Slayer Episodes.
Premium Sushi
In Neo-Saitama, one of the places the story is set in, ordinary sushi is made of fish flour.
Health
AND
Cheap
A Neo-Saitaman phrase for "Healthy and Low Price".