How long is piece of string?
Make what you want of it!
Got a good idea or niche which doesnt need 2 guys,DP and some ass to mouth and you can get semi exclusive vids shot for under 1k.
Add a blow out deal for some good back end content with a healthy stock of semi exclusive sets and you will retain well and have enough promo contentto keep you,TGP owners and webmasters happy.
Having 'researched' (ahem) many big program's paysites some are total shit, barely more than a collection of mediorce feeds.
Some however, are enormous (100+ custom vids + backend and access to 15 other like-sites).
Design you can get a modest pay done for 4-500 bucks if you shop around, 2k will get you anexcellent one with promo material.
Point is...if you have areasonable budget you can most likely put a site together. lest not forget marketing
merry xmas