I got a surprise today when the Halloween 2018 event was offered for free. The top camp equipment items, Sanchez and Grandma, -- WaitWhat?! -- "Camp Equipment?" I guess anything can be called equipment.
OK, sorry. Back to the message. None of the top pieces were consumed, even though I bought at least 1 of them last year. Both showed 0/2. Hmm...
I checked my camp equipment and neither was there. Next stop was the wiki. Since this is a tiered event, these have different values depending on which region you are in. I believe that I moved up to a new region since last Halloween and I have already replace that camp equipment with better. Now I am seeing better versions offered.
That relieves these concerns mentioned by BlameTheParrot,
Of course you're assuming you'll still be in the same region and still have the need for the said equipment. I've tried the very thing you are describing & by the time the Event was re-released, the "premium* pieces were equal to or below what I currently had in my camp.
Perhaps their experience is based on non-tiered events.
If I had not spent my leftover event materials (hands) on consumables, I may have had the opportunity to make an extra purchase this time.
Time will tell.