By A. Sina Booeshaghi · August 15, 2026
Costco sells an all-beef quarter-pound hot dog and bun, with free refills on Coke products,for $1.50.
The price has not changed since 1984. This price point is so sacred that Costco co-founder Jim Sinegal reportedly told then-CEO Craig Jelinek that he would kill him if he ever raised it
(Today).
Asprices have gone up in the USacross multiple spending categories, has Costco kept that promise? I bought two hot dogs at the same Costco three years apart. Both times the price was $1.50, exactly as promised. But the second hot dog bun looked smaller, enough so to raise the question: if the sticker price has not moved in three years, am I paying the same amount for less hot dog?
Conveniently, I had photographed both hot dogs (Figure 1) so I could, in principle, measure the size difference of the bun. But the two photos were taken from different distances, at different angles, and—importantly—without a ruler. But, luckily, I didn’t need one because the sausage is the ruler.
I treated the sausage as unchanged at 8 inches long, giving me a known length I could use to register the two images. I first located the two ends of each sausage. I then used the camera focal length and the dog’s assumed 1-inch diameter to estimate how far each sausage pointed toward the camera. A simple pinhole-camera fit put the 2023 dog at about 13 degrees out of the image plane and the 2026 dog nearly broadside. I then rotated and scaled the images to the same 8-inch reference line while correcting the measurements for perspective.*
The Costco hot dog bun lost about 0.8 inches of length and 0.87 inches of combined width across its two halves. I modelled the bun as two rectangular prisms (angle-corrected length x mean visible width x a constant 2-inch depth) to estimate the total volume loss. (Note the sausage partly hides one bun half in the 2026 photo, so this estimate may be slightly overstated.)
Table 1: Angle-corrected bun-half dimensions estimated from the registered images. Measurements are rounded for display; areas, volumes, and prices were calculated from the unrounded values.
Under this two-prism model, the bun volume dropped from 29.5 cubic inches to 16.1 cubic inches—a reduction of 45%. Put another way, the 2026 bun is about half the size of the 2023 bun. And since the dog itself was unchanged, I modeled it as an 8-inch cylinder with a 1-inch diameter: V = pi x (0.5 in)^2 x 8 in which is approximately 6.3 cubic inches to estimate the volume of the full serving (Table 2).
Table 2: Estimated hot dog volume and price per cubic inch.
By this estimate, the $1.50 hot dog contains about 37% less volume in 2026 than it did three years ago, in 2023. While the price is the same, the nominal cost per cubic inch has increased by about 60%.
So, to my dismay, the price of a Costco hot dog did go up.
How did we get here? It’s likely that Costco changed bun suppliers or asked its original supplier to make a smaller bun. While Costco does not publish its food-court bun contracts, it does offer product listings for those same buns. A now-unavailable Costco listing forFrancisco International hot dog bunsshows a 28-ounce package containing 12 rolls, or 2.33 ounces per bun. (I suspect this is the original bun, or one similar to it.)