Why would people want to get to page 247? They don't know what is where and will be going in order usually right?
If some category has that many results then people will want filters or search, not a way to look through 500 pages one by one.
Well one possible reason would be is maybe your sorting your results by alphabetical order and you want to get to the letter "G" so you just kind of make a guess towards the middle and click on the middle page then go up or down from there in the same proccess until you get to "G"'s this same idea can be applied with different sorting methods such as if I was sorting by price maybe I want to find the 50BTC range it would take for ever if a person had to load every page just to get to it...
Right, I guess you need the enter number of page functionality for the time being then.
Ultimately a filter for price range and other variables would be a lot better than a repeated guess and modify guess system.
The site does look pretty good. Glad to see people who care about their bitcoin businesses. It's amazing how far things have come in a year.
edit: That's not to say at all that people didn't care a year ago. It's just more appropriate to put time into image and such now that there are so many more potential customers.