I visited Lasence on alibaba today and found that their 575nm lineup just got a significant price drop (was $270-ish before), and now they have even cheaper 561nm options (woah!)
▬570nm or ▬575nm 20mW CW? $200
▬570nm or ▬575nm 10mW CW $100
▬561nm 20mW CW $85
▬561nm 15mW CW $70
▬561nm 10mW CW $40
▬561nm 5mW PWM $23
(p.s. I'm not affiliated in any way with lasence... just excited about their yellow modules)
▬570nm or ▬575nm 20mW CW? $200
▬570nm or ▬575nm 10mW CW $100
▬561nm 20mW CW $85
▬561nm 15mW CW $70
▬561nm 10mW CW $40
▬561nm 5mW PWM $23
(p.s. I'm not affiliated in any way with lasence... just excited about their yellow modules)