My position as well. Transfers often arrive quicker than the garments that they are being printed on.
The biggest problem with providing a premium service is the density of the white ink when being printed onto dark garments. Increasing pass quantity slows the process and increases ink use which hits the margins.
There seems to be a gap in the market for someone providing fluorescent dtf prints. There was a Dutch company selling three head machines with four channels of fluoro colours and four white channels.