There are some out there but finding used toy haulers are pretty rare so when you find one that is priced where your budget is you might want to jump on it provided that it's not a total piece of crap.
One word of caution for you though is to make sure the tongue weight isn't going to bust the hitch right off the Sequoia. Typically the tongue weight on a TH is significantly more by design to offset the weight of any toys behind the rear axle. My TH can get close to 2000lbs of tongue with full tanks and no toys.
