My most expensive one was $42 something/£31 something in the 4"x4" size. I bought it after I did one embroidery off the machine.
It is a collection of collage designs, 23 in total, and was actually about half price. Urban Threads. They have a lot of my money.
Both Urban Threads and their sister site Embroidery Library offer a couple of free designs each month available in all the sizes. For anyone considering a machine or a larger format you can download all of them and tuck them in a folder for "just in case". Em Library also does a Christmas club with some gorgeous designs each year, all free to members. Free to join too.