Thanks for trying to help. I'm pretty iffy on sites selling directly from China as they're not always trustworthy. Plus, my mac is A1425 so it still doesn't quite match.
I am very sorry but I was not able to find a rubber feet listing which specifically mentions a A1425 model. And I doubt you would find any info about cross-compatibility of rubber feets between two different retina models: A1425 vs A1398. Although I think they are compatible (because it would be crazy if Apple has more than 2 types of feet) I could not guarantee anything
In case if you are sure that they _are_ compatible, and would like to buy them:
Aliexpress is
bigger than ebay/amazon combined, and could be considered as trustworthy,
however it appears that a seller of listing above has just 5 reviews (although positive) .
So, here are safety notes about buying feets from there, and Ali in general, just in case you need:
1) If seller asks you to make a payment outside Aliexpress ("drop $5 on my paypal and i'd send item to you"), or asks your credit card info, report this to Aliexpress customer service because thats a scam
2) Unlike eBay - which has just 45 days fixed time for buyers protection - Aliexpress has a nice countdown for that, which is usually 60 days. If your item shipping takes longer than expected, you need to monitor a countdown and - when it goes below 7 days, ask a seller to increase a customer protection countdown - and, if he refuses to do so - open a dispute for refund, because if you wait until countdown expires, the money will be transferred from Aliexpress to seller... This countdown could be increased as many times as you want, until you'll fed up with slow shipping and demand a refund (and if item arrives after you got a refund, you could keep this item - consider this as a compensation for waiting
)
3) There are two ways of buying an amount of feets that's less than he's selling (of course, both ways require you chatting with him)
a) he opens a new listing with a specified lower quantity of feets for less money (negotiated before) and then you buy & pay
b) you buy this $16 listing, and in description of order you write "X rubber feets" where X is how much feets you need.
But DONT pay for this order yet: instead, send a link of order to seller, then he reduces the $16 down to negotiated price,
and only then you pay!
( Unlike eBay, at Aliexpress you don't have to pay for item after you buy it. if you don't pay, your order just would expire after 2 weeks or so)
4) if the item arrives and its not good quality, dont click "confirmation of received item" in your order list, because that would finalize your order and money go to seller. Instead, open a dispute for refund
ALTERNATIVE SOLUTIONS:
Use another of your rubber feets as an example, and:
1) try to find a not-that-bad replacement (as suggested by
poiihy above)
2) try to make your rubber feet by yourself, by melting rubber of a similar type, if you are skilled in that
3) 3D scan your existing rubber feet and then 3D print a new one from rubber
4) buy cheap feet for unibody, and then somehow adjust them to fit retina if thats possible
5) Live with it for some time: there's a demand, and as you see a supply should be arriving soon
could help you 
