Yeah I don't think using a bulk sale is the best idea here, there's way better sales to use:

Sold for a Searing Plasma Sole Mate

https://backpack.tf/profiles/76561198103054597#!/compare/1488499200/1488585600

Needs a mini, i'd advise getting a mini for this quickly before the sale goes out of date.

Added 10 Keys for a Duped Circling Heart Troublemaker's Tossle Cap

https://backpack.tf/profiles/76561198059701300#!/compare/1490832000/1490918400

https://backpack.tf/profiles/76561198064874829#!/compare/1490745600/1490918400

Likely a high outlier.

Your best sale to use here is the sole mate sale, even if it's old it's way better than the bulk sale you're using. Resuggest once you're done with the sole mate.