I've been looking, too, but since the Saxon 1-3 workbooks are consumable, it's hard to find used. You can find TE's used.
I have the TE's for 76, an Algebra 1/2 set, and an Algebra 1 set, but none below that. If you want to plan ahead, I could make a good deal for you!
LOL! Plan ahead is something I'm not so great at. Hopefully I can get my whole life organized soon but until then I'll be frantically searching in the weeks leading up to a new year. With a two year old running around it doesn't get much better than that.