thank you. on amazon I did find the http://www.amazon.com/Slayers-Collection-Vol-OVA/dp/B000UP880E/ref=wl_it_dp_o?ie=UTF8&coliid=I1PMDVNF96IR6F&colid=D31X4QI6DPPO & http://www.amazon.com/Slayers-5-movie-box-set/dp/B000ADKWMS/ref=wl_it_dp_o?ie=UTF8&coliid=I33L283RH8EQ0A&colid=D31X4QI6DPPO
& I am considering checking them out, don't worry I haven't watched any episodes yet.
That's a good price on the boxset. It used to be like $120+ on Amazon, although I got mine on ebay for something like $35.
It's not necessary to watch the movies first though. I actually watched everything chronologically, starting with the first season, then the first movie, and so on. That may be confusing though, because the movies and OVAs are all different from the series. The main series is Lina and Gourry and crew saving the world from certain destruction, while the movies and OVAs are Lina and comedic sidekick Naga running around getting into trouble.