I've been in the market for a NOCO GB150 4000A jump starter for a while. The best lightning deal price I've seen is $199, although CCC shows Dec last year it was down to 173$. Unfortunately for the past few months it's been hovering at $299, with a short foray down to $239, so I'm growing impatient, and found the Gooloo 4000A jump starter at $169 with a $20 clippable coupon. This is about the same price as the noco 1500A unit, and should have a lot more starting power so felt like a good deal. This is the lowest price on CCC (although it doesn't seem to track clippable coupons), reviews are good and fakespot is clean, so I figured I'd try it. If others find this useful, great. If not, flame away
As a bonus, you can also add the gooloo battery charger with a 20% clippable coupon, i think that might already be posted in another thread.