Lance holding tanks a large in their 3/4 ton models and they make excellent TC's. In business for almost 50 years now and they make more TC's than any other manufacturer and have for eons. Dealers right in your area and they get trade-ins constantly when owners buy a new one. AND yes, most will be in your price range.
We have had 7 different TC's since 1965 and the last 3 since 1993 were/are Lance and they have been excellent and never leaked once and zero structure issues or rot in them. 2 have been to Alaska from Michigan and all over the USA and Canada. Not one repair needed or done yet. very close to 200,000 miles of traveling and over a thousand night of camping in the 3 Lances.
Everything worked normal (no freezeups) when dry camping in the winter in the U.P. of Michigan in -11F temps and in Canada in -13F and the inside stayed at 70-71F and we were very comfortable and NO drafts. What more could we ask of our Lances?