I tried to find a comparable alcohol marker by researching online. Someone suggested that Bic Mark-Its were pretty good, and they were definitely cheaper. However, they are not refillable, and do not blend anywhere as well as the Copics. Also, there are only 36 colors, so blending would not be very subtle anyway. Copics have 358 different colors. I also bought a few Blick Studio markers which were $2.69 each, but although they work well, they are not refillable. Another good alcohol marker is by Prismacolor. I used these years ago to color cut-out figures for bulletin boards when I was still a school librarian. I remember being very impressed with the fact that they did not leave a streaky look. Believe it or not, I have a few of those on hand that still work, and I've been retired over 16 years. However, they are not refillable either.
I had heard about Spectrum Noir markers and knew that Joann's carried the 6-pack sets in my local store. They were $14.99 per set, which came to $2.50 each, or $1.50 with a coupon. Yah! So, I bought 3 sets, and found that I liked how well they blended. I also preferred the bullet nib over the so-called "Super Brush" on the Copics. I mostly use alcohol markers to color stamped or digital images to use on cards, and find that these smaller nibs get into the tiny crevices much easier. What I did not realize until recently is that the Spectrum Noirs are refillable, and have replacement nibs. They even have a brush nib, comparable to Copic's, which you can use to replace the broad nib in the end opposite to the bullet nib. In my opinion, this gives them even more of a leg up on Copics besides just having a much better price.