$37.99 versus $57.99 for 14" weaving hair
$20.00 increase within the last five years? for the same pack of hair extensions? Hair extensions pricing seems to inflate every year.
When I sell hair extensions, I have to charge based on replacement value. If I purchased a pack of hair over a year ago, then I probably will not be able to replace the same package of hair at the same price. So the hair extensions are appreciating over time.
The key is having a market to sell to. I usually keep corporate friendly colors, 1b, 2, 4, and blends. I also keep a large enough inventory to catch client's attention in order to up sell services.