The Echo Dot has recently been refreshed in so much as there's now a model with a clock integrated for $10 more than the base model, but in this and the standard one for $50 you get all the same Alexa features as the other Echo speakers in a teeny tiny package. The Echo Plus tops the range of the speakers because it's also a built-in smart home hub, and it's basically the same form factor as the standard Echo, but is more expensive at $165.
With these also having a display you get video and not just audio-based features. The standard Echo Show is $230 for the regular model and $90 for the 5-inch model or $130 for the 8-inch. The Echo Dot is $50, the 2nd generation Echo is $100, and the Echo Plus is $180. The first big difference between them is the price.
Amazon now has a whole range of Echo products to choose from: The Echo Dot, Echo, Echo Plus, Echo Show in three sizes, the Echo Flex and the Echo Studio
