[USER=16697]HAUPTMANN[/USER]
Those boots seem kinda meh.....especially since your looking to be 501st approved. I'm a ROTJ Fett myself and got my boots from Imperial Boots. However, sadly they have discontinued their line up of Fett products.
You should take a look at MoW Studios though. They look super close to the Imperial Boots version. But his only sizes he offers now are 9.5 (US), 10 (US) and 10.5 (US). According to his website, he will NOT be getting these back in stock. So if those are your sizes, grab a pair! For $31.70 more these are superior to that Etsy version - in my opinion.
[URL unfurl="true"]https://manofwarstudios.com/collections/frontpage/products/star-wars-boba-fett-boots[/URL]
[ATTACH=full]234433[/ATTACH]
Best,
-Iron