There's a pretty decent Eggsy pendant available on ebay as well. You can get them as cheap as $5.
I've got the glasses and tie from Mr. Porter, I love both of them. I'd really like to get the cuff links as well, but I can't justify it. I might have them made at some point.
https://s1.postimg.org/6lnu67ko1r/2017-09-15_10.36.19.jpg
Also, spoilers ahead, so if you haven't seen the second movie, stop now.
I'm pretty sure I IDed the Kingsman scotch bottle from the end of the movie. It's Knappogue Castle Irish whiskey 14 year. I think the 12 year might be the same bottle and it's a bit cheaper, but it doesn't sound nearly as appealing.