HP 49G+ and HP 39G+ Marketing Samples

[mr womp womp]

I've been a part of the TI community for a few years now over on Ti-planet and Cemetech, but its my first time on the HP forums. I received 2 HP graphing calculators today with stickers that read "pre-release not for resale" and "MARKETING SAMPLE"
The HP 49G+ is dated 03/07/02 and the HP 39G+ is dated 03/07/23.
I don't know too much about HP calculators, but they seemed like interesting pieces for the collection. I'm not sure how rare they are, but I know that for TI calculators, marketing samples are exceptionally rare, hence why I bought them. I'd love to get some feedback from the community, maybe some people here know more about these than I do