That seems like a huge thing to forget.
Not so much, It happens when your working your ass off meeting deadlines and demands from time to time.
sometimes things happen along the way.
Making a pedal for a friend, or making one for yourself - sure, it happens. Producing 100 for a company selling them at a price of $300? That's sloppy.
I disagree. nothing is flawless, it's impressive. production oversights are known to happen from time to time, humans are not machines.
100 builds is a lot of work that's a $30,000 job, Lots of variables potentially go wrong.
producing the Melvins Documentary wasn't there a slight snag with the DVD itself?
I worked in a bindery putting books together, a 70-80,000 Dollar Job sometimes turns into a 120,000 Job if someone fucks up royal. It's months of work. Sometimes books don't have staples in em'...someone forgot to check, there goes a nights work up in smoke....guess who was too tired and forgot to check while running the machine? think you're tired then? How about after you have to spend an additional 7 hours on a 12 hour shift to catch up to the mistake so the day shift can run on time on schedule...trust me it's a miracle anything ever happens right. Point being, you don't want to fuck up an expensive Job.
Someone forgot to take their vitamins that day is all.
Reversing the terminals on the battery connector though would be sloppy, something like that. If you're like me and don't know what you're doing maybe you'll get a volume pot wire inverted.
How many safeguards can you put on a Job like this? no one's life is on the line here that's for sure.
I once paid a guy to re-do the gears on my bike, he obviously burned a Joint and didn't seat the cables through the housing under the crank case, and guess what? My LIFE is hanging by a steel chain? if I Paid someone to fuck up my life $20 for the Labor is paying for what you get...rest assured I gave that guy a real hard time when I took the bike back. Fucking idiot.
That's a case of clear neglect, If my gear slipped while a truck is going by, guess what? point being, if you kill your customer it's bad for business literally and figuratively.
a Stomp box that breaks the first time you drop it or it gets kicked etc is still worth a third of this pedal.
*IF* these are well built time will tell. Get back to me in 5 years let me know how they are holding up after some gigs.
I've had Crappy Tube screamer 808 break easy or constantly trying to fix another. Good Tube screamers (TS-9) are about $170 dollars new in box, the switches are cheap plastic and they break the first time you drop them...plus to get them sounding decent there's at least an additional $70 worth of analog man parts to install. so for a modified Tube screamer you're grand total would be around $240 more or less that's $60 less than a pessimiser not counting Tax.
If those red knobs are $3.50 each, and the DPDT switches are about $12-24 and it's wired true bypass, I'll trade you my Tube muff for one of these any day. Not even because I like the sound, but because it says Melvins on it and it's limited AF!
Once is enough.
Rest assured it's a solid investment for a pedal at $300 if it's rugged.
$300 because they are Limited boutique items, lest a thing of imperfection. It's possibly the coolest thing the band has ever put out as a Melvins brand product.

Hence why the manufacturer immediately sent out a battery connector coupling. No harm no foul says I
You can buy a bag of 9 volt battery snaps at Rat shack for like 8 Dollars so maybe if you made a real stink you're entitled to a *whopping* refund.

PS.
I'll bet you this is the inspiration behind the Treble knob "HIGH AF" reference.