Need advice on how to quit Amazon as cheap as possible for a failing product

I started selling on Amazon Australia market for the first time around Nov 2024 as a newbie with 1000 units of a product having 5 variations. I’ve made a lot of mistakes a long the way and wasted much capital and have not made a single dime of profit since starting this because of my overestimation and bias. The product itself existed on the market but not with the features and colours like mine which were all custom and the it was also branded.

At first I used fulfilment through a 3PL because I thought I would be selling through other platforms like ebay and website but that failed so after some months I didn’t want to give up and moved my entire inventory to FBA for the extra features and things were slightly better but still no profit, just barely under breaking even. I’ve lowered costs, spent a lot on PPC, better product detail page etc.. I KNOW my product is the best in the market but I can’t make it work. Nothing has worked and I’m at the point of totally quitting because i cannot recoup my original cogs AND its eating more cash trying other techniques. I’ve even consulted with a inventory liquidator who offered a price a mere fraction of what I’ve paid to the point it is insulting and I would rather throw it all in the bin than give it to them. I currently have a payment due on 17th sept which I owe Amazon because storage fees are killing me and I still have like 750 of the 1000 units.

My question is what would happen if completely abandoned my account, cancelling my credit card and simply leaving forever with no intention to ever come back to this shitty company. I don’t care if they affect my credit score because I’ve already left the country (but still a citizen). Should I do as described and just shut off or should i “dispose” the inventory first to avoid continuous charges against my name?