Stamp Collection Website With Values?

I'm looking for something, I'm sure it's been discussed in the past but I couldn't find a good thread in the forum so here I am posting my question:

Does this website exist?
- Something that would have all (or most) stamps of the world including pictures
- I'd just tick a box indicating that I own either a MNH or used copy of each stamp I won
- It has the values (any catalogue is fine, I realise the true value is close to 10% but that's fine, I just need a ballpark figure)
- The website can then show me at a glance how much my collection is worth

Ideally this is a website not a software for portability reasons, I'd love to be able to see which stamps I own and which I'm missing at an expo for example

Thanks in advance!

Stampworld has, LastDodo has. However, you should take care even with 'prices realised.'
First of all, as your Italy thread showed, prices are not the same everywhere and tariffs may apply. Postage may differ. Those things are obstacles to uniform prices across the world. Another issue with average prices realised is that it does not tell you how much of the average is attributable to space fillers and how much to very fine stamps. And with such sites often attracting people who want to dump stamps, there is a good chance a considerable share of unused had no gum, or was used with a cancel; dito for the hinged never hinged mint stamps.

Thanks so much, I've been looking at Stampworld but as far as I can tell they dont have prices? I get your point about never to rely on catalogue prices but I do need some system to indicate whats very common, whats rare and whats very rare - are you a paid member of Stampworld? if so can you send mea screenshot of what their paid page looks like and whether it has prices? LastDodo looks promising but I was surprised to see that its actually more expensive than Stampworld and even StanleyGibbons!

Interesting, when I open Stampworld, I do see a catalogue with prices. It starts nagging about opening a free account after checking several pages. I have no use for Stampworld, other than trying to identify a stamp for the sport of it.

LastDodo has catalogue prices but for the stamps sold through their platform (max EUR 75) also an average sold price. The catalogue prices can be SG or Yvert, but, mostly, are Michel. I too noticed they tend to be high. The site is a mess and run by collectors of which most consider themselves more important than the site and even more have no idea what stamps are.

Prices tend to be higher in the region where they were issued, because that is where collectors are.

Still, if you want to know which are cheap and which are expensive, inflated catalogue prices do the job as well.