Whether the Dyson Airwrap is “worth it” is really a break-even question, not a taste one. At $600 it's a lot of money up front - but if you regularly pay for salon blowouts, it can pay for itself within a few months.
The short answer
At a typical $50 blowout (about $60 with tip), the Airwrap pays for itself in roughly 10–12 at-home blowouts - about 5–6 months for someone who styles every other week. After that, every blowout is effectively free apart from a few dollars of electricity and occasional filter cleaning.
When it's worth it
If you already pay for blowouts, style multiple times a week, or split it across a household, the math is firmly in your favour. Over a 4-year life the cost per use drops to roughly $7–$8 - versus ~$60 every salon visit.
When it's not
If you rarely heat-style your hair or only want the occasional blowout, the cost per use stays high and the salon may be cheaper overall. And if budget is the deciding factor, the Shark FlexStyle dupe breaks even about twice as fast.