Bushmills 1608 400th anniversary.

Hello, i have a bottle of Bushmills Irish whiskey that i got when traveling Ireland. There was only 300 or so bottles produced, and could not be purchased without going directly to the Bushmills distillery in Co. Antrim, Northern Ireland. (At least at the time they were not selling unless in person).

I got there in time and was able to get my hands on a bottle. It's Bushmills 1608 400th anniversary commemorative bottle. My question: What is this bottle worth? and i know there was a limited number of bottles, so how rare is this whiskey? and how sought after is this bottle?

Any input or info would be great.
Thanks.