not only is that a particularly uncommon focus keyboard, trying to find blue switches for a reasonable price in this day and age is damn near impossible x(
I sold a leading edge 2014 with blue alps in its original box in great condition for $200 in 2017. same exact condition keyboard with box is listed on ebay for $500. i needed the money at the time but i deeply regret it. not because id want to sell it again for a higher price, but because they were quite pleasant to type on. my main build has orange alps right now and i cant help but wonder what a blue aek60 wouldve felt like. granted back then then I didn't even know they made 60% alps pcbs. what a shame. good luck with your search