IMA Shop is in China or Hong Kong = no respect for intellectual property or copyrights = copy anything you can. I seriously doubt they have tons of old boxed phones or old stock, but they can buy old phones cheaply (the 'recycle your phone here' boxes in shopping malls, shops, etc. where people throw good stuff, I wonder where the phones go) and replace old parts with knock-off parts to make them look new. Asians pirate everything from covers and little parts to complete PCBs. Also printing an "original" box shouldn't be a problem for them either.
Not saying the phones are crap or doesn't work, I'm saying
it's highly likely there is plenty of parts NOT made by original manufacturer. There are worse deals, even scams, on Ebay but I don't think IMA Shop is doing that. Yes, they have the same look and feel, but it's as embarrassing as a fake Rolex if somebody notices it.
Nice that there are parts for old phones, but on the other hand, I would rather buy original parts.