Back button / backspace does not work with window.history.pushState

This works for me. Very simple.

 $(window).bind("popstate", function() {
    window.location = location.href
  });

pushState alone will not make your page function with back/forward. What you'd need to do is listen to onpopstate and load the contents yourself similar to what would happen on click.

var load = function (name, skipPushState) {
  $("#hideGraphStuff").hide();
  // pre-load, etc ...

  $.post("pages/getPriceDeckData.php",{data : name}, function(data){
    // on-load, etc ...

    // we don't want to push the state on popstate (e.g. 'Back'), so `skipPushState`
    // can be passed to prevent it
    if (!skipPushState) {
      // build a state for this name
      var state = {name: name, page: 'Price Deck'};
      window.history.pushState(state, "Price Deck", "?p=priceDeck&dN="+ name);
    }
  });
}

$(document).on("click", ".priceDeckLink", function() {
  var name = $(this).text();
  load(name);
});

$(window).on("popstate", function () {
  // if the state is the page you expect, pull the name and load it.
  if (history.state && "Price Deck" === history.state.page) {
    load(history.state.name, true);
  }
});

Note that history.state is a somewhat less supported part of the history API. If you wanted to support all pushState browsers you'd have to have another way to pull the current state on popstate, probably by parsing the URL.

It would be trivial and probably a good idea here to cache the results of the priceCheck for the name as well and pull them from the cache on back/forward instead of making more php requests.