Makeup conspiracy theory- bottomless Becca shimmering skin perfectors

So you know how restaurants advertise bottomless fries or infinity drink refills? I've been thinking (probably Thanksgiving inspired if we're being honest) and I have a makeup conspiracy theory to share - Becca's shimmering skin perfectors are bottomless. I'm not sure how the Becca fairies do such a great job coming over to my house and topping up my SSPs, but I have magically yet to run out despite near everyday use.

I bought the Becca Shimmering Skin Perfector Spotlights set last year (about 14 months ago). The set contained mini SSPs in Pearl, Champagne Gold, and Opal, each with .17oz of product. The full size is ten times larger at 1.7 ounces. I absolutely adore the Becca SSP formula and use one of these shades almost every day.

Based on my photo showing how much I have used over 14 months, I have gone through about half of Pearl, about a third of Champagne Gold and a quarter of Opal. I also have a picture below (shade: Opal) of the typical amount I use on a daily basis - I apply to my cheekbones, inner corner of my eye, lightly on my browbone, and cupid's bow.

By my estimate, if I'm using up about a mini size (.17oz) per year, it would take me around 10 years to finish up a full (1.7oz) size bottle! Assuming I'm gross and don't care about expired products or bacteria, that is a serious commitment to a highlighter. I think I am so used to using up and repurchasing cream base products (concealer, BB cream, foundation) it has been truly baffling to me that I am nowhere near empty on these. Thus, I can only conclude the Becca fairies are coming to my house for free refills :)

I am left with two questions: Why is the full size so gigantic? If you have finished a full size Becca shimmering skin perfector, how did you do that? I would love to know where and how you apply it.