I have a couple of both, but they were all less than $6 each.
Granted, I surely have more options nearby than you do, so that's not a fair comparison, but I would concur with @Elliottw - leave that $20-$28 in your pocket and keep looking.
Even if it costs you $5-$10 more (and it shouldn't), a Mediator or Tri-Strike core, or a Rampage or Alpha Trooper, will all serve you better than either of those choices.