I purchased a "Refundable" ticket on DL with a fare code IFFWTZ. It says refundable under the fare code, but in looking at the fare rules I find no mention of an amount charged to cancel. This is for a one-way JRO-MIA in Business and all flights are on KLM metal ($1,900). Is it really 100% refundable for any reason at any time or is there a way to find out the amount if not? Is the PENALTIES the relevant section?

Voluntary ChangesIN THE EVENT OF CHANGES TO TICKETED FLIGHTS BEFORE DEPARTURE OF JOURNEY - APPLIES WITHIN TKT VALIDITY CERTAIN DOMESTIC REISSUE PROVISIONS MAY BE OVERRIDDEN BY THOSE OF DL INTERNATIONAL FARES NO CHARGE FOR REISSUE OR HIGHEST FEE OF ALL CHANGED FARE COMPONENTS - CATEGORY 19 DISCOUNTS APPLY AND REPRICE USING FARES IN EFFECT TODAY PROVIDED ALL OF THE FOLLOWING CONDITIONS ARE MET- 1...
Flight ApplicationTHE FARE COMPONENT MUST NOT BE ON ONE OR MORE OF THE FOLLOWING ANY QR FLIGHT ANY LH FLIGHT ANY UA FLIGHT ANY EI FLIGHT ANY EK FLIGHT ANY EY FLIGHT ANY MN FLIGHT ANY W3 FLIGHT ANY SW FLIGHT
Advance Reservations and TicketingRESERVATIONS ARE REQUIRED FOR ALL SECTORS...
StopoversUNLIMITED FREE STOPOVERS PERMITTED
TransfersUNLIMITED TRANSFERS PERMITTED ON THE FARE COMPONENT ONLINE ON THE PRIMARY CARRIER...
CombinabilityEND-ON-END NOT PERMITTED...SurchargesIF INFANT 0-1 WITHOUT A SEAT...
Sales RestrictionsTICKETS MAY NOT BE SOLD IN VENEZUELA/CUBA/ZIMBABWE/ CAMEROON/CHAD/CONGO (BRAZZAVILLE)/GABON...

PenaltiesCANCELLATIONS CANCELLATIONS PERMITTED
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..Higher Intermediate Point(HIPS)/Mileage ExceptionsORIGINATING EAST AFRICA - THE HIGHER INTERMEDIATE POINT RULE DOES NOT APPLY FOR STOPOVERSChildren DiscountsACCOMPANIED CHILD 2-11 - CHARGE 100 PERCENT OF THE FARE...Tour Conductor DiscountsNOTE - DISCOUNTS APPLYAgent DiscountsNOTE - DISCOUNTS APPLYMiscellaneous ProvisionsNOTE - PASSENGERS WHO HAVE A CONFIRMED RESERVATION S FOR TRANSATLANTIC TRAVEL VIA DL BUSINESS CLASS SERVICE WILL BE PERMITTED TO MAKE RESERVATIONS IN THE FIRST CLASS COMPARTMENT OF DL FLIGHTS WITHIN AREA 1 PROVIDED NO BUSINESS CLASS COMPARTMENT ON SUCH FLIGHT WITHIN AREA 1ApplicationBUSINESS CLASS FARES APPLICATION AREA THESE FARES APPLY BETWEEN THE UNITED STATES AND AREA 2/AREA 3...