You can use the "poor man's method" to cut a few photos and then if you like it you ccan invest in a cutting system. You might find a couple layouts using circle shaped photos and you are done.
poor man's method
- freehand cut with scissors
- position a cup (plate, any shape) on the photo, trace around it and cut with scissors
- print a few simple circle and oval shapes using your computer. Cut them out and then position over your photo and cut around paper guide.