Sales tab defaults to guild sales?

Is that normal behavior? On Thursday I saw the tab sale was going on. I bought guild tabs (ritual & socket) that I needed and then I switched to the "Sales" tab and bought 2 more. Last night (Friday) I log in and notice it turns out I ended up buying 2x guild tabs - I contacted support and they tell me they can't help about that... Ok fine, I can own that mistake, so I open up the Shop for the first time after a full day had passed, click the Sales tab, buy a tab, and see my guild points go down.

Is that normal behavior? The only difference between the pages is the word 'guild' tucked in front of the tab name and I can be honest that I just saw the visual of the tab, looked for the word Ritual and Socket, and thought it was what I wanted.

I feel like if that's how it's intended to work.... IDK doesn't seem like the best system to me, as I ended up making the same mistake two nights in a row.