I know a few people have asked this question already. The account worth page is now gone, but I know there were a few achievements tied to this page, such as sP on hand compared to total sP. Is this achievement still available? I worked pretty hard to get it only to find that it is now gone :/

No, unfortunately the account worth page was removed because it was a massive server strain. The acheivement would rely on that exact same strain to figure out the value of your entire account vs. the amount in pure sP.

This bums me out a bit :(