What’s everyone’s thoughts on using Amazon coupons vs a discounted price?

I made a pros and cons list about this. When you have a product that needs traction, what is everyone’s opinion about the BEST way to do it?

Say you have a newer $40 product selling 100 units a month. You want to get that volume up to double the volume. Would a $5 Amazon coupon be better than a $5 strike through discount?

When you do the Amazon coupons, the advantage is you get to keep your current “List Price”, but is it worth it? You have to pay $.60 per redemption. Then some customers might not even know how to clip it and they end up seeing the full price anyway.

I’m also super curious if there is a major traffic difference from using a coupon instead of an equal strike through discount. Has anyone noticed a major difference?

In general, when the goal is to increase volume, what is the better strategy?

Any thoughts are appreciated. Thanks!