Why the outright decline?
If you were open to accepting a better offer it seems countering with something you found acceptable would leave them an easier path to increase their offer than simply relying on their willingness to outbid the original offer.
Laying out a counter offer that takes them from where you are today to your counter at least keeps the lines of communication open. I don't think it would burn any bridges to say I am making $X today with Y weeks of vacation and the job your are offering requires that I move (+A%), live in a higher COLA (+B%) and have more responsibility (+C%). As a result, I can't justify the change for anything less than X*(1+(A+B+C)) and Y weeks of vacation. If policy does not allow Y weeks of vacation, I value each week of vacation at Z.
Maybe they can't go that high, but since you indicated a range of $80k-$90k earlier, it shouldn't come as a shock.