I got a VTech sit to stand learning walker second hand on Facebook marketplace. My sister used it for her son too.
I got two. One lighter plastic one that is better for when they are more stable and it is easier to turn. The wood one I have is much heavier so it was more stable when he was just learning to walk. Getting both second hand is ideal
I got a fisher price one out of a charity shop for £3 at Christmas. Wish I'd got it sooner as it massively helped his walking and really got him on his feet. He's never really bothered too much with the front of it so depending on how your LG is with toys I wouldn't spend a fortune. My LB just loved the sound it made on the tiles in the kitchen and being able to get around 😊