My trip is costing £739.01 and that involves a trip on the A318 and A380 back from Miami.

Just the transatlantic hops and internal flight would be £2400 so yes for me it's worth it.

Positioning flights cost around £40 and 5000 Avios will give me a day to explore Dublin and retain my Silver card 3 weeks after flying,

Without it I would not have travelled so for me clearly worth it.