Our time is valuable, our supplies are costly, either you give them as gifts or you sell them. I sell mine for 50$ and when I use my burberry fabric they go for 60$ each. Here the Pellon is expensive and not always easy to find as for the burberry fabric, I have to travel quite far to find it.
People just love this bag as it's so practical for different uses, I think that's why they like them so much. They sell really well, so why not keep sewing them.....