Yes, pairs are a way to get 2 tires the same size. Just be awhere that you may not get the tire size you expect. I bought a set of 24x12x12 Deestones a while back for my brother, with this in mind, and they turned out to be closer to 23x10.50x12s. The MF 12 had 23x8.50x12s on it and these tires were just a bit wider to be 10.50s but no bigger diameter. Also the thread pattern was not cool either.
When we get Carlisle, Firestone, or Goodyear from my local dealer they are the correct size and match.
Tru-Power 26x12x12s are just a little over $100 around here.
Lots of guys ask about tires and think these imports will fit there needs.
I am writing this to save some of you guys from a big disappointment.