Looking to upgrade.

So I have a cheap kala uke, which has allowed me to fall in love with playing and the only problem for me is the intonation. I can tune all the strings and they actually stay in tune for a while but chords aren’t in tune. My assumption is that the frets are poorly placed. Not surprising given the cost. My question is what’s the next cheapest option that has good intonation? This was $40 or 50 I believe. How much do I need to spend to have a uke with open strings being in tune by them selves and with their friends?