I'm not sure if too many people from your target customer group for these are particularly interested in somewhat "childish" themes like circus. I guess your safest bet is rehashing a "classy" theme like those mentioned topsellers like Pharaohs in very high quality, or not roll with a theme (something like a generic "private card room" doesn't count as a theme for me though) at all and just go with nicely designed denominations on the chips, nothing else.
Also, if you want to keep the price point down and therefore massively limit the spot level, you definitely need to deliver an exceptional inlay design to pull the overall appearance out of the mud. China Clays already have much nicer spot patterns than what you have in your current stock chip offers and that at a much lower price point. Their downsides are quality (about which your target customers probably don't know too much about however) and somewhat lame label design (which remains the factor you can influence).
The all-quarter pie idea might actually be one of the best spot picks as I can't recall seeing any recent stock chips with that pattern - so despite the design being relatively simple, it's something previously unavailable or mostly unknown on the mass market - a fresh look. Also would lend itself well to a modern, minimalistic but sleek inlay design well, particularly the 3C variant.
View attachment 208962
I would also strongly consider trying to design a set with Cali colors instead of traditional colors, which would also give the majority of your potential customers (everyone except people from CA) something "fresh" and unseen.