Depending on where you go to have it done, it likely can increase the price you pay to have them done. If you’re crafty enough with an at-home mould you could likely pull it off, but I know very little about those, do they come with an acoustic filter? Depending on how the DIY customs turn out, they might not sound as good as a universal fit.

I was fortunate enough to have gotten my customs when I was part of a live production group in college where we had it in our budget to get executive board members custom-made ear plugs. We had an audiology center right on campus with a doctor that could take the mould and send it to the company that would make the plugs, at no extra cost to the student.

I’m actually looking into some universal plugs right now because I might have written off universal plugs entirely due to the Etymotic’s triple-flange shape being such deep insertion. This weekend I’m expecting a few pairs of universal fits to come in the mail, I’ll follow up with how they work out soon! :)