The K200 was a solid camera, I still have one, but have not used it for years,
While you are waiting for yours to show up, you can start reading the manual,
https://www.ricoh-imaging.co.jp/english/support/man-pdf/k200d.pdf
I ran mine mostly with SanDisk Cards, forget the max size it will handle but you should be able to run any current SD cards in it.
Mine did tend to eat batteries, I ran Eneloop rechargeables in it, get at least two sets so you can swap out in the field.
If you want to use disposables, get Lithiums, it will eat up alkalines like a teenager through a bag of potato chips.
Biggest limitation I found with it was the ISO, Only runs up to 1600, and 800 was all the noise I could stomach from it. At lower ISOs, it gave very nice results.
Enjoy it,
Per Not a Number, definitely update the Firmware,
https://www.ricoh-imaging.co.jp/english/support/digital/k200d_s.html