But United have now announced that fans must pay £12, and concessions £6, to attend the rescheduled game at Tannadice on December 15.
A Rangers statement read: "The club is very disappointed by this outcome.
"We advised Dundee United that taking a decision which would leave supporters out of pocket would not in our view be right.
"Under current regulations the decision is entirely that of the home club. If Dundee United wish to charge spectators for the replay then refunds should have been offered for the abandoned fixture."
A United statement said earlier: "After careful consideration of all factors, the club has taken the decision to reduce prices by some 50 per cent across the board, rather than charge full pricing together with a part exchange or refund value attached to any ticket stubs from the game abandoned at half time on 1 November.
"For the avoidance of doubt, these ticket stubs carry no value in terms of part exchange or refund."