Alien Costume Market Report: Sales Volume, Market Share, Leading Brands & Market Trends

MEICOLY is the best-performing alien costume brand in July 2026, moving 10,500 units across 2 ASINs for 49.5% of Top 10 volume. SAOROPEB follows with 7,000 units (33.0%), ahead of Disney on 1,000 units (4.7%).

With 9 brands splitting the Top 10 and 87.3% of volume sitting with three of them, this is a concentrated shelf — the leaders hold multiple listings or one very high-velocity ASIN, so a new entrant competes against established review moats rather than an open field. Average selling prices among the leaders run from $7.98 to $19.99, which frames the price band a competing listing has to justify.

Based on July 2026 data, this shortlist surfaces the two kinds of ASIN worth keeping an eye on — the ones that just broke into the Top 10, and the ones growing fastest month over month. Specifically, one ASIN forced its way in: B0FDWY44V9 booked 200 units at $9.99, with ▲ 100.0% MoM change. On the growth side, B0CYQF64BC leads positive momentum with ▲ 100.0% MoM growth on 100 units, with B0F6VCK8Q6 close behind at ▲ 100.0% MoM on 100 units.

The two signals carry different weight. A fresh entrant means share has already changed hands — an incumbent gave up its place to make room, so any competitive set drawn up a month ago is now out of date. A steep growth rate works as the earlier warning: it marks demand that is still compounding, usually a month or two before the ranking catches up to it.