If you've ever been stuck trying to work out which camera to buy, new or used then have a look at Apotelyt it's quick and easy to see the benefits of each camera. You can compare physical size and location of buttons and features.
https://www.apotelyt.com/
For me, when looking at small cameras for street photography it's ideal to see which camera would fit in the 'proverbial pocket' but also be quite unobtrusive.
Fuji X100 or a Panasonic LX100ii? A GX9 or Sony A7c?
https://www.apotelyt.com/compare-camera/fujifilm-x100v-vs-panasonic-lx100-ii
https://www.apotelyt.com/compare-camera/panasonic-gx9-vs-sony-a7c
Even information on the worlds most expensive photography lens, the Leica 1600mm ƒ5.6 https://www.apotelyt.com/camera-lens/leica-apo-telyt-r-1600mm-56
If you are looking for site to compare the price of UK camera equipment Camera Price Buster is a good place to start. https://www.camerapricebuster.co.uk/