Ok, for the US, if it can be just plain white, then the “ring smart lighting“ series is very nice. I have quite a few of these. They don’t integrate directly with smart things, but you can use echo routines as an intermediary with good results. They come in several different form factors, including stake lights, wallmount, etc. Most models are available in either black or white cases. You need one bridge, and you can buy the individual lights in multi packs as needed.
These are battery-operated and quite bright, 80 lm for the stake lights.
These particular models are not yet available outside of the US, But in the US they are carried by many retailers including Amazon, Home Depot, Best Buy, Target, etc. so you might find some on a Fourth of July sale.
If you want color lights, the Hue are very nice, but as you mentioned, very expensive.
Another white alternative is to use the fibaro controller and connect it to individual halogen lights.
Or, as mentioned, dumb outdoor strips, in which case you can get color again.
I see that the Sylvania garden spots are sold out everywhere, but they are not marked as discontinued. So they may just have had some supply chain issues because of COVID-19, that has hit quite a few manufacturers.