The best espresso maker you can buy cost less than $550, it's called the Cafelat Robot, this manual pull lever machine has no electronic parts, it will last several lifetimes! You can pull coffeeshop quality shots from it. The Cafelat Robot is a manual 58 mm lever machine that delivers higher extraction potential, pressure profiling, and more control giving you creativity over your shots, but requires more technique. There is no need to preheat the brew chamber for this machine.
Then there is another if you want consistency with automatic operation without any fuss with a manual lever pull espresso maker, and that is the 9Barista MK2 Pro, while it will cost about $890 it to can last a very long time due to no electronic parts. The 9Barista MK.2 is a precision-engineered, thermodynamic espresso machine that delivers perfectly stable temperature and pressure with zero skill required. There is a less expensive 9Barista version differences are the Mk2 uses High‑quality machining, but standard alloys and seals; whereas the Mk2 Pro uses upgraded alloys, higher‑temperature seals, more robust machining tolerances. That all means that the Pro survives harsher heat environments and long‑term wear better.
There is also the Flair 49, it cost less than even the Robot, but it won't last as long and won't pull quite the quality of shots like the others can pull, and the shot consistency is the lowest of the 3, not bad though, just not as good. Also, of the 3 the Flair will have the lowest durability but still higher than any electric espresso maker. The Flair 49 you must preheat the brew chamber; thus, more fuss than the Cafelat Robot; and it has more parts to clean than the Robot which again is more fuss. The Flair 49 wins the budget contest against the other 2.
The Flair 49 you might find these on sale during certain times of the year, but the others due to the more factory direct and small factory operation those rarely go on sale if ever.