And that is exactly how Starbucks devalued stars.
This is true, and they were devalued a couple times now.
The more expensive drinks you buy the quicker you accumulate stars since the stars now have a monitory value. So buy a drink worth $5.00 get 10 stars. If you buy a $2.00 coffee you won’t get as many.
While your statement is correct, there was a devaluation of what the stars are worth.
It is really hard to do an exact comparison of the various reward programs due to the monetization of the stars, but I think if examples are given showing a typical coffee purchase for the different rewards programs, it would give a better understanding of why the new system really sucks for most people.
Since there are so many variables involved, I will just use the stars cost of a free coffee, and I will not include any of the bonus star earners that you have to purchase specific items to earn extra stars, nor stuff like double-star day.
To visualize the differences, I will make an educated guess at what the average low end($3), middle($4), and high end($5.50) prices of coffee at Starbucks:
Before Devaluation:
12 stars = free drink
12*3 = $36 spent for free drink over 12 purchases
12*4 = $48 spent for free drink over 12 purchases
12*5.5 = $66 spent for free drink over 12 purchases
Under this rewards system, it was pretty simple, a purchase is a star, there were methods to accumulate stars quicker, such as make separate purchases, but in the example above, I just stuck with a customer buying one cup of their favorite coffee.
Devaluation 1:
125 stars = free drink or $62.50 for free drink
62.50/3 = 20.83 or about 21 purchases
62.50/4 = 15.63 or about 16 purchases
62.50/5.5 = 11.36 or about 12 purchases
Under the first devaluation of stars, if a Starbucks customer spend less than $5.21 per drink or purchase, then the system utilizing 125 stars for a free drink would be less beneficial than the 12-star system.
Devaluation 2:
150 stars = free drink or $75 for a free drink
75/3 = 25 or 25 purchases
75/4 = 18.75 or about 19 purchases
75/5.5 = 13.64 or about 14 purchases
Under the second devaluation of stars, if a Starbucks customer spend less than $6.25 per drink or purchase, then the system utilizing 150 stars for a free drink would be less beneficial than the 12-star system. People paying around $3 for their coffee of choice is now buying double the amount of drinks for a free one than they did under the 12-star system.
The more Starbucks changes their reward system, the less beneficial the reward system is to the customer.
A side note, I may have over estimated average coffee prices. For example a venti brewed coffee is only $2.65. If I did overestimate, then the math would show that the newer systems are even worse than what was is depicted above.
As for a Venti brewed coffee, this would be about 29 drink purchases to get a free drink, compared to 12 of the old rewards program.