A collage made up of 15-20 of your photos - a 12x17 print in a stand up frame will cost you £20. A larger picture like the example showing 19 with additional script and typewriter font will cost approx. £32 for 20- 25 pictures. Each photo has to be cropped and scaled and have edges burred so that they all appear to mould together and this is the time consuming bit - the frame is not the major expense so smaller pictures still have to be charged out accordingly to justify my time.