Make a new bookmark with this as the URL code call it whatever you like.

When you are on your wishlist page, clicking the bookmark will toggle it to sort from low to high, high to low.

javascript:(function(){var%20elems=document.querySelectorAll('.list-inner');elems=elems[elems.length-1];var%20 prices=Array.prototype.slice.call(document.querySelectorAll('.product-row-wrapper'),0);prices.sort(function(a, b){if(elems.classList.contains('sorted')){return%20parseFloat(b.querySelector('._price.product-state__price'). textContent)-parseFloat(a.querySelector('._price.product-state__price').textContent);}return%20parseFloat(a.qu erySelector('._price.product-state__price').textContent)-parseFloat(b.querySelector('._price.product-state__pr ice').textContent);});elems.innerHTML='';elems.classList.contains('sorted')?elems.classList.remove('sorted'):e lems.classList.add('sorted');for(var%20i=0;i<prices.length;i++){elems.appendChild(prices[i]);}})();

Edit: due to forum format its add some spaces that will need deleting for it to work

Cool, thanks! A second click to sort from high to low would've been nice, as it currently just blanks out the wishlist, but I'm not really complaining. I don't allow add-ons to run on the site, so a bookmarklet solution is very handy. Note that the spaces are larger on the forum, but they're still there when copying. Paste the code into a text editor, then search and replace (space) with nothing. There should be four occurrences to get rid of.

Have fixed the mistake of it blanking out the list on a 2nd click. I did experiment with a few add-ons but they didnt want to play nice with angular.

Have now updated the first post, multiple clicks will toggle sort order

Thank you again! I figured a user script manager like ViolentMonkey can run any script the browser can, but since I don't run add-ons on the site, I haven't actually tried.
Edit: I wanted to add this is also handy if you want to buy games for friends and you're looking at their wishlist pages.

yes works on other peoples wishlist pages aswell.

Userscripts have document run times however even setting code to run at "document-end" the angular code on this site would still run after the document had finished loading, rendering any script fairly useless as they would trigger before the angular had rendered the code that was needed.

But yes, best to leave add-ons off as i dont want to lose my games, you should've seen me read the community api add-ons for galaxy...

Nice. Had to remove the spaces before it worked, but now it works great. Thanks

Belated thanks for sharing.
I also replaced all the %20 with a space for each.