I don’t like to put frame spacers in my supers because I like to start new un-drawn frames 10 to a super to get the comb drawn correctly. Once the frames are drawn, I reduce them to 9 per super to make extracting easier. I’ve tried putting 9-frame spacers in some and no spacers in others, but it always comes down to having a super with spacers when I need one without and vice versa. So I have settled on no spacers and manually spacing frames when setting the super.
You can spend close to $20 for a frame spacing tool that some of the dealers sell. By the way, it is about the size of a regular hive tool, and we know how easy they are to loose. One supplier even recommends using two of these tools to make it easier. So you can spend close to $40 or built one for just a couple of buck on your own.

All you need is a scrap board, 2 frame spacers and a cheap handle. I know, it looks like a fancy handle, but it was the cheapest one Lowe’s had. It was in the “clearance” pile and was less than $1.
Six frame nails and two screws, a wa-la! a $2 frame spacing tool.