My wife and I are definitely interested in buying a timeshare in the future, and after finding this forum. We now know we can save a lot of money through the resale market.
Another option you might want to investigate is renting from current owners. It allows you to "try before you buy". There are a number of advantages to this:
1) There's no upfront cost other than maybe the small cost of joining TUG or Red Week.
2) You can "try before you buy". If you find out later that owning a TS is not right for you, it's easy to get out of.
3) If one or more years you want to "exchange" (IOW, you don't want to vacation where you bought), there's no exchange fee and no membership fee to the main exchange companies (RCI, II, etc.)
4) If you want to do a different vacation one year such as a family camping trip or road trip, you don't have to worry about depositing your week or renting it out to recover your MFs.
5) You can often rent for less than what the owners there are paying in MFs. TUG has a Last Minute Rentals section where you can possibly find a rental no more than 45 days away for $800/week or less.