Managing more inventory for extra model numbers is not exactly cost free. They must have a reason....I would hope.
Can you think how much they sell with this marketing trick. They know human psychology.
Produce scope. 100MHz scope. Model these all with 50, 70 and 100 label.
Then tell how much 70 and 100MHz model price is.
Then take care that 50M model is "hackable" to 100M model,
Peoples feel they get more they pay.
Without marketing trick.
Try make it as one model. Just 100M and nothing else. Also sell it with this price with all options. (no options but all as standard features. And so that nothing is hackable.
Price it just as 50M model now. (sidemark: using China goverment subsidy and pushing distributors to sell these as "nice boxes" without enough income for real good support/customer care. Now distributors need fund these using income from other models and brands selling.)
Start selling.
Do you think it is still as famous as it is now using this marketing trick.
Accidentally (I think) they fast learn this in near history with DS1000E case.