I keep running into these type of fares for AZ, but OTAs seem to price it differently.

How to buy this ticket
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Provide this information to a travel agent to help them match the fares found.
Make sure to provide the exact booking and fare codes shown.
Fare 1: Carrier AZ OSXOWN6 MIL to ROM (rules)
Passenger type ADT, ONE-WAY-ONLY fare, booking code O
Covers MXP-FCO (Economy)
€16.00
Italian Embarkation Tax (IT) €13.20
Italian Domestic VAT (FN) €2.46
Italian Security Charge (VT) €2.63
Italian Security Bag Charge (EX) €1.01
Italian Council City Tax (HB) €6.50
Italian Passenger Service Charge (MJ) €1.19
(YR) €10.00

Subtotal per passenger €52.99
Number of passengers x1

TOTAL AIRFARE & TAXES €52.99
This ticket is non-refundable.
No changes may be made to this ticket after purchase.
Fare construction (can be useful to travel agents)
MXP AZ ROM 16.00OSXOWN6 EUR 16.00 END XT 1.01EX 2.46FN 6.50HB 13.20IT 1.19MJ 2.63VT 10.00YR


Any idea if this is bookable?

Thanks