I went to CC last night and got an open box TXSR700 for a great price. CC has a deal where you get $80 toward a speaker purchase when you buy a receiver so I put the $ toward a single RTi28, which was $80. I then bought another one to finishe the pair. The store only had one more left in stock so the manager sold it to me for $30. I now have 3 RTi28's, only problem is I have no idea what to do with the 3rd.

Should I return it and try and get $80 refunded or do you think they will only give me $30 back?