It looks like SR Blue fuses are price-fixed at $150 retail. Being a fuse-skeptic (and a cheapskate) I wouldn’t buy a fancy fuse at full price. Perhaps others have previously suggested it, but here’s my idea.
You should sell SR Blue fuses at wholesale to customers who already own a unit of PS Audio gear. Also, provide same to new customers as a purchase incentive.
I think this would be good marketing unless it puts you in legal jeopardy vis-à-vis SR.