Chinese Stamps - Inherited

I got these stamps (and quite a bit more from other countries) and did some piddling with Google Lens and it helps a ton to find similar stamps online. I'm a total newbie with stamps but learned today that oddities in stamps with great condition make them rare.

Anyways, these don't have any oddities but are in good conidtion imo. This page of Sun Yat Sen stamps from China came up with the most values on ebay with some high listed items but nothing ever sells lol so it seems scammy. The green 10.00 one did get sold and was listed at $425 but took a best offer so who knows what it really sold for. The one that is black is currently listed for a little over a $1000 on ebay and looks to be in similar condition. I guess the black color more rare for some reason?

Any help would be greatly appreciated on these guys and if you are interested in seeing anything else I can scan those.

What you have, are some of the last issues of Nationalist China, from 1949. The whole page is worth maybe a few dollars ($5?), if the stamps haven't been hinged (speaking of which, I'm not sure how they're mounted, but they look like they may be sealed in what are called Crystal Mounts, in which case remove them ASAP; these are infamous for causing serious harm to stamps).
ebay is a useful, but not necessarily reliable, source to gauge value. Spend a little time poking around the forum and you'll come across a number of threads about delusional or criminally-minded sellers. You may want to explore stampworld.com to get more accurate readings.

LDonnie !
classic_paper has a point ebay is not so good source of information ,you could check at internet .There are many websites in which you could search for examples similar to your stamps .

If you read other posts here at "Have You inherited Some Stamps? Start Here." and other relevant threads, you'll see that most of those that inherited something are quick to look or claim rarities.
We also had several discussions about ebay, and the bottom line is not how much was asked, but how much was given. If you follow several offers to the end, mainly those with offers and not auctions, you might see what offers are reasonable and got a buyer, and what offers derive from smoking something strong.
Catalog values are nice, but most often I see stamps being sold far bellow catalog value.