retailme not has a 20% off it seems but it doesnt work or take off anything on checkout. Capitalone offers 7% back through zoro also; making it a potential 27% off.
For Zoro, you need to make an account, log in, browse around viewing items, and you should get a coupon in your email within a few days.
I believe the codes are locked to a particular account, so I don't think you can use someone else's code.
Their Koken items drop ship from Palmac/Koken USA, so "unavailable" or "backorder" status might not be totally accurate.
Zoro's support is fantastic though, so just give them a call to see if they can get the Zeal models if that's what you want.
Yeah, it's just a pop-up or banner message on their site:
